seven of the world 's most endangered crocodiles flew out of melbourne on wednesday en route to their native country . the 40 centimetre-long philippine crocs travelled in custom designed boxes specially built by melbourne zoo to ensure they had a smooth flight . the arrival of these one year olds to the palawan wildlife rescue & conservation centre in southern philippines is part of a major conservation effort for the endangered species . one of seven philippine crocodiles which flew from melbourne to the philippines today as part of a major conservation effort . there are only about 250 philippines crocodiles left in the wild , making them the most endangered crocodilian species in the world . the custom-designed boxes which the crocodiles travelled in contained canvas bags cushioned by soft wood wool . -lrb- cnn -rrb- -- rumblings from mexico 's most well known volcano forced several u.s. airlines to cancel flights in the country 's capital on thursday . popocatepetl volcano has let out nearly 100 bursts of steam , gas and ash in the past 24 hours , the national center of disaster prevention said . whether or not a person suffers hearing loss due to loud noise may depend on their genes , research suggests . noise-induced hearing loss is one of the most common work-related illnesses and members of the armed forces are particularly vulnerable . in 2013 , the us department of veterans affairs reported hearing loss as one of the most common ailments among veterans receiving disability compensation . noise-induced hearing loss is one of the most common work-related illnesses , doctors have warned . now , however , scientists at the university of southern california believe they have made a breakthrough in their understanding of the condition . there are only about 250 philippine crocodiles left in the wild , making them the most endangered crocodile species in the world . the reptiles were conceived and hatched at the melbourne zoo , the first and only australian zoo to breed them . after the breeding program has been concluded , the crocodiles will be released into the wild , where they could grow to be up to three metres long . chris banks , manager for zoo victoria 's international conservation programs , explained to abc why the crocodiles are facing extinction . ` what you 've got in the philippines is a large human population , widespread poverty , a government strapped for resources to protect their own species , and civil disturbance in the south - so you ca n't really go and monitor crocodiles , ' he said . after the breeding program has been concluded , the crocodiles will be released into the wild , where they could grow to be up to three metres long . the reptiles were conceived and hatched at the melbourne zoo , the first and only australian zoo to breed the species . melbourne zoo director kevin tanner has visited the philippines and participated in the release to the wild of young crocodiles bred there . he says that ` to be able to breed such endangered animals and then return some to the home of their species is a rare and important event . ` it is a real credit to the skills and dedication of our reptile keepers that our breeding program is so successful . ' the custom designed boxes which the crocodiles travelled in contained canvas bags cushioned by soft wood wool . manchester united have put forward an opening # 21.5 million offer for dortmund captain mats hummels , according to german newspaper bild . the germans value their captain at # 35million but in united 's favour he has had a relatively poor season occasionally clashing with supporters when results went against them earlier this season . dortmund are keen to bring in sami khedira from real madrid as their new captain amid a summer of big changes following jurgen klopp 's announcement that he will leave the club at the end of the season . the ashes have n't reached mexico city international airport , airport officials said in twitter posts . but delta , american airlines and alaska airlines canceled a dozen flights that had been scheduled to depart from the airport on thursday . at the nearby toluca international airport outside mexico city , spirit airlines canceled flights to and from ft. lauderdale and dallas . no mexican airlines had canceled flights at the airports , officials said . after detecting elevated activity , authorities flew over the volcano on thursday . disaster officials said they had measured 12 hours of tremors of high and medium frequency at the volcano , which is about 50 miles away from mexico city 's airport . they have identified a gene , named nox3 , found in the inner ear , that is crucial in determining how vulnerable a person is to developing hearing loss . their research , looking at the dna of mice exposed to noise , is the first published genome-wide association study on noise-induced hearing loss in mice . as a result of the findings , those at higher , genetic risk for hearing loss can decide whether to take precautionary measures to protect their hearing prior to hazardous noise exposure , the study authors say . ` understanding the biological processes that affect susceptibility to hearing loss due to loud noise exposure is an important factor in reducing the risk , ' said lead study author professor rick friedman . ` we have made great advances in hearing restoration , but nothing can compare to protecting the hearing you have and preventing hearing loss in the first place . ' located in a national park southeast of the capital , popocatepetl can be seen from there on a clear day . it is one of mexico 's highest peaks and last had a major eruption in 2000 . manchester united are reported to have put in a # 21.5 m bid for dortmund defender mats hummels -lrb- left -rrb- . hummels -lrb- left -rrb- struggled early in the season for dortmund and united hope to use that to their advantage . german paper bild have reported the bid has been placed but sportsmail understands the offer has n't gone in yet . german world cup winner hummels is under contract with dortmund until 2017 but earlier in the season admitted he would like to play abroad at some point in his career . he told kicker : ` some days i think i would definitely like to move abroad but then , other days , i think i do n't fancy it at all , ' he said when asked of united 's interest . ` basically , i think moving abroad would be good for my professional and personal well-being . eventually , i 'd like to leave the bundesliga . ' i have had many conversations with the leaders of dortmund , where i know i am a big part of the team , but i am yet to make a decision about my future . united also retain an interest in hummels 's dortmund team-mate ilkay gundogan , who the club see as a potential successor to michael carrick . scientists have identified a gene , named nox3 , found in the inner ear , that is crucial in determining how vulnerable a person is to developing hearing loss . while some gene association studies on noise-induced hearing loss in people have been conducted in the past , all were very small and their results unreplicated . genome wide association studies search the entire dna for common mutations to see if any of those are linked with a trait . mouse genome wide association studies have lead to the discovery of hundreds of genes involved in complex traits that have immediate relevance to people . the study was published in the journal plos genetics . an earlier version of this piece existed but has now been amended . ilkay gundogan -lrb- right -rrb- is also a target for united as they look to revamp their squad in the summer . but there have been rumblings since then . in april , authorities barred people from getting close to the volcano after a series of explosion and expulsions of ash and gas . dortmund want to bring in real madrid 's sami khedira -lrb- right -rrb- as their new captain for next season . cnnmexico and cnn 's greg botelho contributed to this report .
research was conducted at the university of southern california . scientists there have identified a gene , named nox3 , found in the inner ear . say this is crucial in determining a person 's vulnerability to hearing loss . noise-induced hearing loss is most common work-related illness in the us .
seven of the world 's most endangered crocodiles flew out of melbourne on wednesday en route to their native country . the 40 centimetre-long philippine crocs travelled in custom designed boxes specially built by melbourne zoo to ensure they had a smooth flight . the arrival of these one year olds to the palawan wildlife rescue & conservation centre in southern philippines is part of a major conservation effort for the endangered species . one of seven philippine crocodiles which flew from melbourne to the philippines today as part of a major conservation effort . there are only about 250 philippines crocodiles left in the wild , making them the most endangered crocodilian species in the world . the custom-designed boxes which the crocodiles travelled in contained canvas bags cushioned by soft wood wool . -lrb- cnn -rrb- -- rumblings from mexico 's most well known volcano forced several u.s. airlines to cancel flights in the country 's capital on thursday . popocatepetl volcano has let out nearly 100 bursts of steam , gas and ash in the past 24 hours , the national center of disaster prevention said . whether or not a person suffers hearing loss due to loud noise may depend on their genes , research suggests . noise-induced hearing loss is one of the most common work-related illnesses and members of the armed forces are particularly vulnerable . in 2013 , the us department of veterans affairs reported hearing loss as one of the most common ailments among veterans receiving disability compensation . noise-induced hearing loss is one of the most common work-related illnesses , doctors have warned . now , however , scientists at the university of southern california believe they have made a breakthrough in their understanding of the condition . there are only about 250 philippine crocodiles left in the wild , making them the most endangered crocodile species in the world . the reptiles were conceived and hatched at the melbourne zoo , the first and only australian zoo to breed them . after the breeding program has been concluded , the crocodiles will be released into the wild , where they could grow to be up to three metres long . chris banks , manager for zoo victoria 's international conservation programs , explained to abc why the crocodiles are facing extinction . ` what you 've got in the philippines is a large human population , widespread poverty , a government strapped for resources to protect their own species , and civil disturbance in the south - so you ca n't really go and monitor crocodiles , ' he said . after the breeding program has been concluded , the crocodiles will be released into the wild , where they could grow to be up to three metres long . the reptiles were conceived and hatched at the melbourne zoo , the first and only australian zoo to breed the species . melbourne zoo director kevin tanner has visited the philippines and participated in the release to the wild of young crocodiles struggled early in the season for dortmund and united hope to use that to their advantage . german paper bild have reported the bid has been placed but sportsmail understands the offer has n't gone in yet . german world cup winner hummels is under contract with dortmund until 2017 but earlier in the season admitted he would like to play abroad at some point in his career . he told kicker : ` some days i think i would definitely like to move abroad but then , other days , i think i do n't fancy it at all , ' he said when asked of united 's interest . ` basically , i think moving abroad would be good for my professional and personal well-being . eventually , i 'd like to leave the bundesliga . ' i have had many conversations with the leaders of dortmund , where i know i am a big part of the team , but i am yet to make a decision about my future . united also retain an interest in hummels 's dortmund team-mate ilkay gundogan , who the club see as a potential successor to michael carrick . scientists have identified a gene , named nox3 , found in the inner ear , that is crucial in determining how vulnerable a person is to developing hearing loss . while some gene association studies on noise-induced hearing loss in people have been conducted in the past , all were very small and their results unreplicated . genome wide association studies search the entire dna for common mutations to see if any of those are linked with a trait . mouse genome wide association studies have lead to the discovery of hundreds of genes involved in complex traits that have immediate relevance to people . the study was published in the journal plos genetics . an earlier version of this piece existed but has now been amended . ilkay gundogan -lrb- right -rrb- is also a target for united as they look to revamp their squad in the summer . but there have been rumblings since then . in april , authorities barred people from getting close to the volcano after a series of explosion and expulsions of ash and gas . dortmund want to bring in real madrid 's sami khedira -lrb- right -rrb- as their new captain for next season . cnnmexico and cnn 's greg botelho contributed to this report .
bags cushioned by soft wood wool . -lrb- cnn -rrb- -- rumblings from mexico 's most well known volcano forced several u.s. airlines to cancel flights in the country 's capital on thursday . popocatepetl volcano has let out nearly 100 bursts of steam , gas and ash in the past 24 hours , the national center of disaster prevention said . whether or not a person suffers hearing loss due to loud noise may depend on their genes , research suggests . noise-induced hearing loss is one of the most common work-related illnesses and members of the armed forces are particularly vulnerable . in 2013 , the us department of veterans affairs reported hearing loss as one of the most common ailments among veterans receiving disability compensation . noise-induced hearing loss is one of the most common work-related illnesses , doctors have warned . now , however , scientists at the university of southern california believe they have made a breakthrough in their understanding of the condition . there are only about 250 philippine crocodiles left in the wild , making them the most endangered crocodile species in the world . the reptiles were conceived and hatched at the melbourne zoo , the first and only australian zoo to breed them . after the breeding program has been concluded , the crocodiles will be released into the wild , where they could grow to be up to three metres long . chris banks , manager for zoo victoria 's international conservation programs , explained to bred there . he says that ` to be able to breed such endangered animals and then return some to the home of their species is a rare and important event . ` it is a real credit to the skills and dedication of our reptile keepers that our breeding program is so successful . ' the custom designed boxes which the crocodiles travelled in contained canvas bags cushioned by soft wood wool . manchester united have put forward an opening # 21.5 million offer for dortmund captain mats hummels , according to german newspaper bild . the germans value their captain at # 35million but in united 's favour he has had a relatively poor season occasionally clashing with supporters when results went against them earlier this thursday . disaster officials said they had measured 12 hours of tremors of high and medium frequency at the volcano , which is about 50 miles away from mexico city 's airport . they have identified a gene , named nox3 , found in the inner ear , that is crucial in determining how vulnerable a person is to developing hearing loss . their research , looking at the dna of mice exposed to noise , is the first published genome-wide association study on noise-induced hearing loss in mice . as a result of the findings , those at higher , genetic risk for hearing loss can decide whether to take precautionary measures to protect their hearing prior to hazardous noise exposure , the study authors say . ` understanding the biological processes that affect susceptibility to hearing loss due to loud noise exposure is an important factor in reducing the risk , ' said lead study author professor rick friedman . ` we have made great advances in hearing restoration , but nothing can compare to protecting the hearing you have and preventing hearing loss in the first place . ' located in a national park southeast of the capital , popocatepetl can be seen from there on a clear day . it is one of mexico 's highest peaks and last had a major eruption in 2000 . manchester united are reported to have put in a # 21.5 m bid for dortmund defender mats hummels -lrb- left -rrb- . hummels -lrb- left -rrb- eventually , i 'd like to leave the bundesliga . ' i have had many conversations with the leaders of dortmund , where i know i am a big part of the team , but i am yet to make a decision about my future . united also retain an interest in hummels 's dortmund team-mate ilkay gundogan , who the club see as a potential successor to michael carrick . scientists have identified a gene , named nox3 , found in the inner ear , that is crucial in determining how vulnerable a person is to developing hearing loss . while some gene association studies on noise-induced hearing loss in people have been conducted in the past , all were very small and their results unreplicated . genome wide association studies search the entire dna for common mutations to see if any of those are linked with a trait . mouse genome wide association studies have lead to the discovery of hundreds of genes involved in complex traits that have immediate relevance to people . the study was published in the journal plos genetics . an earlier version of this piece existed but has now been amended . ilkay gundogan -lrb- right -rrb- is also a target for united as they look to revamp their squad in the summer . but there have been rumblings since then . in april , authorities barred people from getting close to the volcano after a series of explosion and expulsions of ash and gas . dortmund want to bring in real madrid 's sami khedira -lrb- right -rrb- as their new captain for next season . cnnmexico and cnn 's greg botelho contributed to this report .
seven of the world 's most endangered crocodiles flew out melbourne on wednesday en their native country. the 40 centimetre-long philippine crocs travelled in custom designed boxes specially built melbourne zoo ensure had a smooth flight. the arrival these one year olds to the palawan wildlife rescue & conservation centre southern philippines is part for. one seven philippine crocodiles which flew from melbourne the philippines today as. there only about 250 philippines crocodiles, making crocodilian the custom-designed boxes which the crocodiles travelled contained canvas bags cushioned soft wood wool. -lrb- cnn -rrb- -- rumblings from mexico 's most well known volcano forced several u.s. airlines in the country 's capital on thursday. popocatepetl volcano has let nearly 100 bursts steam, gas the national center disaster prevention. whether suffers hearing due loud noise may depend their genes, research noise-induced hearing loss is one and members the armed forces particularly. in 2013, the us department veterans affairs reported hearing loss as one receiving disability compensation noise-induced hearing loss is one, doctors warned now, however, scientists the university southern california believe made the condition. there only about 250 philippine crocodiles, making the reptiles were conceived hatched at the melbourne zoo, the first and only australian zoo breed them. after the breeding program has concluded, the crocodiles, where could grow up three chris banks, manager for zoo victoria 's international conservation programs explained abc why the crocodiles facing. ` what you 've in the philippines is a large human population, widespread poverty a government strapped to protect their own species civil disturbance in the south - so you ca n't really go and monitor crocodiles, ' he. after the breeding program has concluded, the crocodiles, where could grow up three the reptiles were conceived hatched at the melbourne zoo, the first and only australian zoo breed the species. melbourne zoo director kevin tanner has visited the philippines participated the release to the wild young crocodiles bred there. he says ` to breed such endangered animals and then return some the home their species a rare and important event. ` it a real credit the skills dedication our reptile keepers our breeding program so. ' the custom designed boxes which the crocodiles travelled contained canvas bags cushioned soft wood wool. manchester united have put forward an opening # 21.5 million offer dortmund captain mats hummels, according german newspaper bild. the germans value their captain at # 35million but in united 's favour he had a relatively poor season occasionally clashing supporters when results went against earlier. dortmund are keen bring sami khedira from real madrid as their new captain amid a summer big changes following jurgen klopp 's announcement at. the ashes have n't reached mexico city international airport, airport officials twitter posts. but delta, american airlines alaska airlines canceled a dozen flights that thursday. at the nearby toluca international airport outside mexico city, spirit airlines canceled ft lauderdale and dallas. no mexican airlines had canceled at the airports, officials. after detecting elevated activity, authorities flew over the volcano on thursday. disaster officials measured 12 hours tremors of high and medium frequency the volcano, 50 away mexico city 's airport they have identified a gene, named nox3 found the inner ear, crucial determining vulnerable developing their research, looking the dna mice exposed noise is on. as a result the findings, those at higher, genetic risk hearing can decide take precautionary measures prior hazardous noise exposure the study authors ` understanding the biological processes affect susceptibility hearing due loud noise exposure reducing, ' said lead study author professor rick friedman. ` we made great advances hearing restoration, but nothing compare protecting you and preventing. ' located a national park southeast the capital, popocatepetl can seen there on. it one mexico 's highest peaks last had a major eruption 2000. manchester united are reported put in # 21.5 m bid dortmund defender mats hummels -lrb- left -rrb-. hummels -lrb- left -rrb- struggled early for dortmund and united hope use that. german paper bild have reported the bid placed but sportsmail understands n't gone in. german world cup winner hummels is under dortmund 2017 but earlier in admitted abroad at. he told kicker : ` some days i think would definitely like move abroad then, other, do n't fancy at, ' when of united 's interest. ` basically, i think moving abroad would good my professional and personal well-being. eventually, i 'd like leave the bundesliga. ' i have had many conversations the leaders dortmund, where know i a big part yet make. united also retain an interest hummels 's dortmund team-mate ilkay gundogan, the club see michael carrick scientists identified, named nox3 found the inner ear, crucial determining vulnerable developing while some gene association studies on noise-induced hearing loss in people have in, all were very their results unreplicated genome wide association studies search the entire dna for common mutations to those linked a trait. mouse genome wide association studies have lead hundreds complex traits immediate relevance people. the study was published plos genetics. an earlier version existed but now amended. ilkay gundogan -lrb- right -rrb- is also a target united as they look revamp their squad in. but there have since. in april, authorities barred people getting close the volcano after a series explosion expulsions of ash gas. dortmund want bring real madrid 's sami khedira -lrb- right -rrb- as their new captain for. cnnmexico and cnn 's greg botelho contributed.
. noise-induced hearing loss is one of the most common work-related illnesses , doctors have warned . now , however , scientists at the university of southern california believe they have made a breakthrough in their understanding of the condition . there are only about 250 philippine crocodiles left in the wild , making them the most endangered crocodile species in the world . the reptiles were conceived and hatched at the melbourne zoo , the first and only australian zoo to breed them . after the breeding program has been concluded , the crocodiles will be released into the wild , where they could grow to be up to three metres long . chris banks , manager for zoo victoria 's international conservation programs , explained to abc why the crocodiles are facing extinction . ` what you 've got in the philippines is a large human population , widespread poverty , a government strapped for resources to protect their own species , and civil disturbance in the south - so you ca n't really go and monitor crocodiles , ' he said . after the breeding program has been concluded , the crocodiles will be released into the wild , where they could grow to be up to three metres long . the reptiles were conceived and hatched at the melbourne zoo , the first and only australian zoo to breed the species . melbourne zoo director kevin tanner has visited the philippines and participated in the release to the wild of young crocodiles struggled early in the season for dortmund and united hope to use that to their advantage . german paper bild have reported the bid has been placed but sportsmail understands the offer has n't gone in yet . german world cup winner hummels is under contract with dortmund until 2017 but earlier in the season admitted he would like to play abroad at some point in his career . he told kicker : ` some days i think i would definitely like to move abroad but then , other days , i think i do n't fancy it at all , ' he said when asked of united 's interest . ` basically , i think moving abroad would be good for my professional and personal well-being . eventually , i 'd like to leave the bundesliga . ' i have had many conversations with the leaders of dortmund , where i know i am a big part of the team , but i am yet to make a decision about my future . united also retain an interest in hummels 's dortmund team-mate ilkay gundogan , who the club see as a potential successor to michael carrick . scientists have identified a gene , named nox3 , found in the inner ear , that is crucial in determining how vulnerable a person is to developing hearing loss . while some gene association studies on noise-induced hearing loss in people have been conducted in the past , all were very small and their results unreplicated . genome wide association studies search the entire dna for common mutations to see if any of those are linked with a trait . mouse genome wide association studies have lead to the discovery of hundreds of genes involved in complex traits that have immediate relevance to people . the study was published in the journal plos genetics . an earlier version of this piece existed but has now been amended . ilkay gundogan -lrb- right -rrb- is also a target for united as they look to revamp their squad in the summer . but there have been rumblings since then . in april , authorities barred people from getting close to the volcano after a series of explosion and expulsions of ash and gas . dortmund want to bring in real madrid 's sami khedira -lrb- right -rrb- as their new captain for next season . cnnmexico and cnn 's greg botelho contributed to this report .
 The article discusses the issue of noise-induced hearing loss, which is one of the most common work-related illnesses. Doctors have warned that it can cause permanent damage to hearing and even lead to deafness if left untreated. A study by scientists at the University of Southern California found that crocodiles are facing extinction due to habitat destruction and hunting, leading to a decline in their population. Conservation efforts are underway to protect these species. Additionally, the article mentions that a breeding program has been concluded, and the released crocodiles will grow up to three meters long. It also highlights the importance of protecting human populations from the effects of noise pollution.