-lrb- cnn -rrb- -- a fire broke out at a rihanna concert in dallas on friday night , forcing the event to end early . a video posted on youtube shows a fire burning at the top of the stage at the american airlines center , with some sparks falling toward the floor . some people begin to stream out . a saudi arabian citizen has captured intense footage of a sandstorm sweeping its way across a street , engulfing everything in its path . the r&b and pop star posted several messages on twitter following the incident . sandstorms caused havoc in saudi arabia last week with a number of flights being cancelled and schools being forced to close . car crashes were also reported in other areas as parts of the arabian peninsula were plunged into darkness . strong winds are believed to have caused the disruption , which resulted in nearby dubai 's skyline almost disappearing and people suffering from respiratory problems . the footage , captured on camera in saudi arabia by mohammed mohsen , shows the sandstorm sweeping into the area in which he stands at a staggering speed . like the aftermath of an explosion , the orange cloud engulfs the road and nearby buildings while it continues to move forward . mohammed mohsen captures the orange cloud getting thicker as it disperses and engulfs the road . the orange cloud gets thicker and drastically reduces visibility across the entire arab state . getting thicker , the cloud suddenly becomes darker and is it disperses further sunlight becomes drastically reduced . a number of people stand alongside the video maker , staring in awe and filming the large cloud on their own camera phones . the video concludes with the filmmaker moving the camera around to show the sheer capacity of the cloud , which he is now very much encapsulated within . britons wake up grumpier than anyone else in the western world , according to users of a sleep app . even though we get more time in bed than most other nations -- seven hours 22 minutes a night -- only the japanese , south koreans and singaporeans are moodier when day breaks . people in these three countries have an excuse -- they spend less time in bed , with the japanese getting an hour and a half less sleep . `` dallas !!! we set the stage on fyah tonight !!! literally !!! i 'm so -lrb- mad -rrb- , i was havin so much fun wit yall too !!! i got ta come back man !! '' the singer tweeted . mohammed mohsen films the cloud above his head and captures the moment he becomes engulfed within it . scroll down for video . moody mornings : brits wake up grumpier than anyone else in the western world , according to users of a sleep app ... despite getting more time in bed than most other nations -- seven hours 22 minutes a night . but while we might sleep longer , we do n't feel as refreshed in the morning , according to results from users of the sleep cycle app . the app tracks how well people rest at night by using the motion sensor in their smartphone . the app then comes up with a ` sleep score ' for the user . by . jane bunce . published : . 14:15 est , 22 august 2012 . by looking at results from 944,000 people , including 75,000 from the uk , researchers found the british had the seventh most disturbed sleep out of 50 countries surveyed . and our mood on waking -- determined by users tapping a ` happy ' , ` sad ' or ` in-between ' face -- was fourth worst , even though we spend more time in bed than anyone bar the finns -lrb- 7hrs 23mins -rrb- , dutch -lrb- 7hrs 24mins -rrb- and new zealanders -lrb- 7hrs 27mins -rrb- . but sleep expert dr neil stanley questioned the accuracy of such apps because they assume you are asleep if you are still , which is not always the case . grumpy britain : while we might sleep longer , we do n't feel as refreshed in the morning , according to results from users of the sleep cycle app . cnn affiliate ktvt , citing attendees at the concert , said the fire apparently started from pyrotechnics that were part of the show . dallas fire-rescue captain johnny bates said a chair caught on fire , ktvt reported . `` one of our engine crews did enter the building but crew members with the aac or concert put out the initial fire , '' bates said , according to ktvt . he added that there were no injuries . | . updated : . 01:49 est , 23 august 2012 . scientists have developed camouflage makeup that not only helps soldiers hide from the enemy , but also shields them from the searing heat of bomb blasts -- and it 's thinner than a sheet of paper . the heat-resistant face paint , developed for the us military , has been described as one of the most fundamental changes in thousands of years to camouflage , and could also benefit fire fighters . the material is powerful enough to protect against a thermal blast that can reach 600 degrees celsius -lrb- 1,112 degrees fahrenheit -rrb- , as hot as a burning cigarette . in the near future , camouflage paint could do a lot more than help soldiers hide from their enemies - it could even protect them from bomb blasts . ireporter captured the fire . on her twitter account , rihanna vowed to return to dallas . `` glad u guys are safe !!! i promise i 'll be back !!! '' she tweeted . ` the thermal blast lasts only two seconds , but it can literally cook the face , hands and other exposed skin , ' said lead scientist dr robert lochhead from the university of southern mississippi . dr lochhead and colleagues set out to find a material that soldiers could smear on their faces like suntan lotion yet protects against heat far hotter than the rays that normally reach the skin . shortly later , the singer also promised to keep fans updated on the situation . protection : the makeup could help soldiers avoid burns from thermal blasts . the formulation they discovered lasts far longer than a normal two second blast , generally providing protection for up to 15 second -- and 60 seconds in some tests -- before its own temperature rises to the point where a mild burn could occur . last week the storm filled saudi arabia 's air before spreading across the peninsula into the united arab emirates , oman and yemen . despite sandstorms being a relatively common occurrence in this part of the world , they are not generally this big and rarely wreak so much havoc . many people took to social media to upload the images they had taken of the sandstorm and share their experiences . the finding raises the possibility that . other professions exposed to intense heat , such as fire fighters , could . also use a colourless version . the team had a difficult task in . designing the face paint as they could not use traditional makeup . ingredients -- oil or wax-based face paint -- as it can melt on the face . `` heading into a production meeting to find out exactly what happened !!! keep u posted '' and burn the skin when in contact with intense heat . so instead they . turned to non-flammable silicone . blend in : soldiers have used face paint for centuries to shield them from enemies . roadside bombs , which have claimed . hundreds of lives in iraq , afghanistan and other conflicts , produce two . blasts . firstly , a blast wave at high pressure that spreads out at . supersonic speeds and can cause devastating internal injuries . secondly , . the thermal blast , which follows almost instantaneously and exceeds 600 degrees celsius . the new face paint can provide protection against this second blast . the . makeup also had to be waterproof and non-irritating , and , in an extra . challenge set by military rules , contain the insect repellent deet . ` deet also is flammable , so when the department of defense asked us to incorporate it , we did n't think we could do it , ' dr lochhead said . their solution was to encapsulate the deet in a water-rich material that prevented it catching fire . the team now plans to test the material on other surfaces to see if it can used to protect clothing , tents and other items from burning . the study was presented at the annual meeting of the american chemical society .
according to new app , brits are grumpiest in western world at daybreak . despite getting more sleep than most - at seven hours 22 minutes a night . only japanese , south koreans and singaporeans are moodier in morning .
longer , we do n't feel as refreshed in the morning , according to results from users of the sleep cycle app . the app tracks how well people rest at night by using the motion sensor in their smartphone . the app then comes up with a ` sleep score ' for the user . by . jane bunce . published : . 14:15 est , 22 august 2012 . by looking at results from 944,000 people , including 75,000 from the uk , researchers found the british had the seventh most disturbed sleep out of 50 countries surveyed . and our mood on waking -- determined by users tapping a ` happy ' , ` sad ' or ` in-between ' face -- was fourth worst , even though we spend more time in bed than anyone bar the finns -lrb- 7hrs 23mins -rrb- , dutch -lrb- 7hrs 24mins -rrb- and new zealanders -lrb- 7hrs 27mins -rrb- . but sleep expert dr neil stanley questioned the accuracy of such apps because they assume you are asleep if you are still , which is not always the case . grumpy britain : while we might sleep longer , we do n't feel as refreshed in the morning , according to results from users of the sleep cycle app . cnn affiliate ktvt , citing attendees at the concert , said the fire apparently started from pyrotechnics that were part of the show . dallas fire-rescue captain johnny bates said a chair caught on fire , ktvt reported . `` one of our engine crews did enter the building but crew members with the aac or concert put out the initial fire , '' bates said , according to ktvt . he added that there were no injuries . | . updated : . 01:49 est , 23 august 2012 . scientists have developed camouflage makeup that not only helps soldiers hide from the enemy , but also shields them from the searing heat of bomb blasts -- and it 's thinner than a sheet of paper . the heat-resistant face paint , developed for the us military , has been described as one of the most fundamental changes in thousands of years to camouflage , and could also benefit fire fighters . the material is powerful enough to protect against a thermal blast that can reach 600 degrees celsius -lrb- 1,112 degrees fahrenheit -rrb- , as hot as a burning cigarette . in the near future , camouflage paint could do a lot more than help soldiers hide from their enemies - it could even protect them from bomb blasts . ireporter captured the fire . on her twitter account , rihanna vowed to return to dallas . `` glad u guys are safe !!! i promise i 'll be back !!! '' she tweeted . ` the thermal blast lasts only two seconds , but it can literally cook the face , hands and other exposed skin , ' said lead scientist dr robert lochhead from the university of southern mississippi . dr lochhead and colleagues set out to find a material that soldiers could smear on their faces like suntan lotion yet protects against heat far hotter than the rays that normally reach the skin . shortly later , the singer also promised to keep fans updated on the situation . protection : the makeup could help soldiers avoid burns from thermal blasts . the formulation they discovered lasts far longer than a normal two second blast , generally providing protection for up to 15 second -- and 60 seconds in some tests -- before its own temperature rises to the point where a mild burn could occur . last week the storm filled saudi arabia 's air before spreading across the peninsula into the united arab emirates , oman and yemen . despite sandstorms being a relatively common occurrence in this part of the world , they are not generally this big and rarely wreak so much havoc . many people took to social media to upload the images they had taken of the sandstorm and share their experiences . the finding raises the possibility that . other professions exposed to intense heat , such as fire fighters , could . also use a colourless version . the team had a difficult task in . designing the face paint as they could not use traditional makeup . ingredients -- oil or wax-based face paint -- as it can melt on the face . `` heading into a production meeting to find out exactly what happened !!! keep u posted '' and burn the skin when in contact with intense heat . so instead they . turned to non-flammable silicone . blend in : soldiers have used face paint for centuries to shield them from enemies . roadside bombs , which have claimed . hundreds of lives in iraq , afghanistan and other conflicts , produce two . blasts . firstly , a blast wave at high pressure that spreads out at . supersonic speeds and can cause devastating internal injuries . secondly , . the thermal blast , which follows almost instantaneously and exceeds 600 degrees celsius . the new face paint can provide protection against this second blast . the . makeup also had to be waterproof and non-irritating , and , in an extra . challenge set by military rules , contain the insect repellent deet . ` deet also is flammable , so when the department of defense asked us to incorporate it , we did n't think we could do it , ' dr lochhead said . their solution was to encapsulate the deet in a water-rich material that prevented it catching fire . the team now plans to test the material on other surfaces to see if it can used to protect clothing , tents and other items from burning . the study was presented at the annual meeting of the american chemical society .
darker and is it disperses further sunlight becomes drastically reduced . a number of people stand alongside the video maker , staring in awe and filming the large cloud on their own camera phones . the video concludes with the filmmaker moving the camera around to show the sheer capacity of the cloud , which he is now very much encapsulated within . britons wake up grumpier than anyone else in the western world , according to users of a sleep app . even though we get more time in bed than most other nations -- seven hours 22 minutes a night -- only the japanese , south koreans and singaporeans are moodier when day breaks . people in these three countries have an excuse -- they spend less time in bed , with the japanese getting an hour and a half less sleep . `` dallas !!! we set the stage on fyah tonight !!! literally !!! i 'm so -lrb- mad -rrb- , i was havin so much fun wit yall too !!! i got ta come back man !! '' the singer tweeted . mohammed mohsen films the cloud above his head and captures the moment he becomes engulfed within it . scroll down for video . moody mornings : brits wake up grumpier than anyone else in the western world , according to users of a sleep app ... despite getting more time in bed than most other nations -- seven hours 22 minutes a night . but while we might sleep longer , we do n't feel as refreshed in the morning , according to results from users of the sleep cycle app . the app tracks how well people rest at night by using the motion sensor in their smartphone . the app then comes up with a ` sleep score ' for the user . by . jane bunce . published : . 14:15 est , 22 august 2012 . by looking at results from 944,000 people , including 75,000 from the uk , researchers found the british had the seventh most disturbed sleep out of 50 countries surveyed . and our mood on waking -- determined by users tapping a ` happy ' , ` sad ' or ` in-between ' face -- was fourth worst , even though we spend more time in bed than anyone bar the finns -lrb- 7hrs 23mins -rrb- , dutch -lrb- 7hrs 24mins -rrb- and new zealanders -lrb- 7hrs 27mins -rrb- . but sleep expert dr neil stanley questioned the accuracy of such apps because they assume you are asleep if you are still , which is not always the case . grumpy britain : while we might sleep longer , we do n't feel as refreshed in the morning , according to results from users of the sleep cycle app . cnn affiliate ktvt , citing attendees at the concert , said the fire apparently started from pyrotechnics that were part of the show . dallas fire-rescue captain johnny bates said a chair caught on fire , ktvt reported . `` one of our engine crews did enter the building but crew members with the aac or concert put out the initial fire , '' bates said , according to ktvt . he added that there were no injuries . | . updated : . 01:49 est , 23 august 2012 . scientists have developed camouflage makeup that not only helps soldiers hide from the enemy , but also shields them from the searing heat of bomb blasts -- and it 's thinner than a sheet of paper . the heat-resistant face paint , developed for the us military , has been described as one of the most fundamental changes in thousands of years to camouflage , and could also benefit fire fighters . the mississippi . dr lochhead and colleagues set out to find a material that soldiers could smear on their faces like suntan lotion yet protects against heat far hotter than the rays that normally reach the skin . shortly later , the singer also promised to keep fans updated on the situation . protection : the makeup could help soldiers avoid burns from thermal blasts . the formulation they discovered lasts far longer than a normal two second blast , generally providing protection for up to 15 second -- and 60 seconds in some tests -- before its own temperature rises to the point where a mild burn could occur . last week the storm filled saudi arabia 's air before spreading across the peninsula into the united arab emirates , oman and yemen . despite sandstorms being a relatively common occurrence in this part of the world , they are not generally this big and rarely wreak so much havoc . many people took to social media to upload the images they had taken of the sandstorm and share their experiences . the finding raises the possibility that . other professions exposed to intense heat , such as fire fighters , could . also use a colourless version . the team had a difficult task in . designing the face paint as they could not use traditional makeup . ingredients -- oil or wax-based face paint -- as it can melt on the face . `` heading into a production meeting to find out exactly what , in an extra . challenge set by military rules , contain the insect repellent deet . ` deet also is flammable , so when the department of defense asked us to incorporate it , we did n't think we could do it , ' dr lochhead said . their solution was to encapsulate the deet in a water-rich material that prevented it catching fire . the team now plans to test the material on other surfaces to see if it can used to protect clothing , tents and other items from burning . the study was presented at the annual meeting of the american chemical society .
-lrb- cnn -- a fire broke a rihanna concert dallas friday night, forcing the event end early. a video posted youtube shows a fire the stage the american airlines center, with some sparks falling toward. some people begin stream out. a saudi arabian citizen has captured intense footage a sandstorm sweeping its way a street, everything the r&b and pop star posted several messages following. sandstorms caused havoc saudi arabia last with flights schools. car crashes were also other areas as parts the arabian peninsula plunged. strong winds are believed the disruption, resulted nearby dubai 's skyline almost disappearing and people suffering the footage, captured saudi arabia by mohammed mohsen shows the sandstorm sweeping into stands at a staggering speed. like the aftermath an explosion, orange cloud engulfs the road nearby buildings while it continues move forward. mohammed mohsen captures the orange cloud getting thicker disperses and the road. the orange cloud gets thicker drastically visibility across the entire arab state. getting thicker, the cloud suddenly darker is it disperses further sunlight becomes drastically. a number people stand alongside the video maker, staring filming the large cloud on their own camera phones. the video concludes the filmmaker moving the sheer capacity the cloud, is now very encapsulated within britons wake grumpier anyone, according users a sleep app. even get more time bed most other nations -- seven hours 22 minutes only the japanese, south koreans singaporeans moodier when day. people in these three countries an excuse -- spend bed, with the japanese getting an hour. `` dallas we set on fyah tonight literally i ' so -lrb- mad -rrb-, i was havin so much fun wit y too got ta come man '' the singer tweeted. mohammed mohsen films the cloud above captures becomes engulfed within. scroll. moody mornings : brits wake grumpier anyone, according users a sleep app... despite getting more time bed most other nations -- seven hours 22 minutes. but while might sleep longer, do n't feel refreshed in according results users the sleep cycle app. the app tracks how well people rest at by in. the app then comes a ` sleep score for. by. jane bunce. published :. 14:15 est, 22 august 2012. by looking results 944,000 people, including the uk researchers the british had the seventh most disturbed sleep out 50 countries and our mood on waking -- determined users tapping a ` happy, in face -- was fourth worst, even spend anyone bar the finns -lrb- 7hrs 23mins -rrb-, dutch and new zealanders. but sleep expert dr neil stanley questioned such apps because assume if still, which grumpy britain : while might sleep longer, do n't feel as refreshed in according results users the sleep cycle app cnn affiliate ktvt, citing attendees the concert, the fire apparently from that part. dallas fire-rescue captain johnny bates said a chair caught, ktvt `` one our engine crews did enter but crew with the aac or concert put the initial fire, '' bates, according ktvt he added there no injuries. |. updated :. 01:49 est, 23 august. scientists developed camouflage makeup not helps soldiers, shields bomb blasts -- it 's thinner the heat-resistant face paint, developed the us military has described one the most fundamental changes thousands to camouflage, could also benefit fire fighters the material powerful protect a thermal blast reach 600 degrees celsius -lrb- 1,112, as hot a burning cigarette. in, camouflage paint could do help soldiers hide - protect bomb blasts ireporter captured the fire. on her twitter account, rihanna vowed return dallas. `` glad u guys safe i promise 'll '' she. ` the thermal blast lasts only two, but literally cook the face, hands other exposed skin ' said lead scientist dr robert lochhead from southern mississippi dr lochhead and colleagues set a material soldiers smear like yet protects heat far hotter the rays normally reach. shortly later, the singer also promised keep fans. protection : the makeup could help soldiers avoid burns from thermal blasts. the formulation they discovered lasts far a normal two second blast, generally providing protection -- 60 in some tests before its own temperature a mild burn could occur last week the storm filled saudi arabia 's air before spreading the peninsula into the united arab emirates, oman yemen despite sandstorms being, they generally this big and rarely wreak. many people took upload they the sandstorm share. the finding raises. other professions exposed intense heat, such fire fighters could. also use a colourless version. the team had a difficult task. designing the face paint as they could not use traditional makeup. ingredients -- oil or wax- face paint as it can melt on. `` heading into a production meeting to find happened keep u posted '' and burn the skin when in contact intense heat. so instead they. turned non-flammable silicone. blend in : soldiers have used face paint for shield enemies. roadside bombs, which claimed. hundreds lives in iraq, other conflicts, produce two. blasts. firstly, a blast wave at high pressure that spreads at. supersonic speeds can cause devastating internal injuries. secondly,. the thermal blast, follows almost exceeds 600 degrees celsius. the new face paint can provide protection this second blast. the. makeup also had waterproof non,, in an extra. challenge set by military rules, contain the insect repellent deet ` deet also is flammable, so when the department defense asked incorporate, n't think ' dr lochhead their solution encapsulate the deet a water-rich material prevented catching fire. the team now plans test the material other surfaces used protect clothing, tents burning. the study presented the american chemical society.
longer , we do n't feel as refreshed in the morning , according to results from users of the sleep cycle app . the app tracks how well people rest at night by using the motion sensor in their smartphone . the app then comes up with a ` sleep score ' for the user . by . jane bunce . published : . 14:15 est , 22 august 2012 . by looking at results from 944,000 people , including 75,000 from the uk , researchers found the british had the seventh most disturbed sleep out of 50 countries surveyed . and our mood on waking -- determined by users tapping a ` happy ' , ` sad ' or ` in-between ' face -- was fourth worst , even though we spend more time in bed than anyone bar the finns -lrb- 7hrs 23mins -rrb- , dutch -lrb- 7hrs 24mins -rrb- and new zealanders -lrb- 7hrs 27mins -rrb- . but sleep expert dr neil stanley questioned the accuracy of such apps because they assume you are asleep if you are still , which is not always the case . grumpy britain : while we might sleep longer , we do n't feel as refreshed in the morning , according to results from users of the sleep cycle app . cnn affiliate ktvt , citing attendees at the concert , said the fire apparently started from pyrotechnics that were part of the show . dallas fire-rescue captain johnny bates said a chair caught on fire , mississippi . dr lochhead and colleagues set out to find a material that soldiers could smear on their faces like suntan lotion yet protects against heat far hotter than the rays that normally reach the skin . shortly later , the singer also promised to keep fans updated on the situation . protection : the makeup could help soldiers avoid burns from thermal blasts . the formulation they discovered lasts far longer than a normal two second blast , generally providing protection for up to 15 second -- and 60 seconds in some tests -- before its own temperature rises to the point where a mild burn could occur . last week the storm filled saudi arabia 's air before spreading across the peninsula into the united arab emirates , oman and yemen . despite sandstorms being a relatively common occurrence in this part of the world , they are not generally this big and rarely wreak so much havoc . many people took to social media to upload the images they had taken of the sandstorm and share their experiences . the finding raises the possibility that . other professions exposed to intense heat , such as fire fighters , could . also use a colourless version . the team had a difficult task in . designing the face paint as they could not use traditional makeup . ingredients -- oil or wax-based face paint -- as it can melt on the face . `` heading into a production meeting to find out exactly what happened !!! keep u posted '' and burn the skin when in contact with intense heat . so instead they . turned to non-flammable silicone . blend in : soldiers have used face paint for centuries to shield them from enemies . roadside bombs , which have claimed . hundreds of lives in iraq , afghanistan and other conflicts , produce two . blasts . firstly , a blast wave at high pressure that spreads out at . supersonic speeds and can cause devastating internal injuries . secondly , . the thermal blast , which follows almost instantaneously and exceeds 600 degrees celsius . the new face paint can provide protection against this second blast . the . makeup also had to be waterproof and non-irritating , and , in an extra . challenge set by military rules , contain the insect repellent deet . ` deet also is flammable , so when the department of defense asked us to incorporate it , we did n't think we could do it , ' dr lochhead said . their solution was to encapsulate the deet in a water-rich material that prevented it catching fire . the team now plans to test the material on other surfaces to see if it can used to protect clothing , tents and other items from burning . the study was presented at the annual meeting of the american chemical society .
 The text discusses the importance of sleep and its impact on physical and mental health. It highlights that people who get less than 7 hours of sleep are more likely to experience negative effects such as fatigue, mood disturbances, and decreased cognitive function. Additionally, it mentions that sleep deprivation can lead to increased risk of chronic diseases like diabetes, high blood pressure, and cardiovascular disease. The article also touches upon the topic of sleep disorders, including insomnia, sleep apnea, and restless leg syndrome, which can further exacerbate sleep-related problems. Overall, the text emphasizes the significance of prioritizing sleep as an essential aspect of overall well-being.