▁to ▁spend ▁extended ▁periods ▁of ▁time ▁investig ating ▁the ▁e col ogy ▁of ▁such ▁regions . ▁To ▁overcome ▁the ▁limitations ▁im posed ▁by ▁desert ▁clim ates , ▁some ▁scient ists ▁have ▁used ▁techn ological ▁adv anc ements ▁in ▁the ▁area ▁of ▁remote ▁sens ing ▁and ▁robot ics . ▁One ▁such ▁experiment , ▁conducted ▁in ▁ 1 9 9 7 , ▁had ▁a ▁special ised ▁robot ▁named ▁Nom ad ▁travel ▁through ▁a ▁portion ▁of ▁the ▁At ac ama ▁Des ert . ▁During ▁this ▁expedition , ▁Nom ad ▁travel led ▁over ▁ 2 0 0 ▁kilometres ▁and ▁provided ▁the ▁research ers ▁with ▁many ▁photograph s ▁of ▁sites ▁visited ▁along ▁its ▁path . ▁ ▁See ▁also ▁ ▁Ar id is ols ▁ ▁References ▁ ▁Category : Des ert s ▁* E col ogy ▁Category : E col ogy ▁Category : H ab itats <0x0A> </s> ▁Alfred o ▁Lem us ▁( born ▁ 1 ▁April ▁ 1 9 5 2 ) ▁is ▁a ▁Venez uel an ▁box er . ▁He ▁competed ▁at ▁the ▁ 1 9 7 2 ▁Summer ▁Olympics ▁and ▁the ▁ 1 9 7 6 ▁Summer ▁Olympics . ▁He ▁finished ▁in ▁third ▁place ▁at ▁the ▁ 1 9 7 5 ▁Pan ▁American ▁Games ▁in ▁the ▁light - middle weight ▁division . ▁ ▁References ▁ ▁Category : 1 9 5 2 ▁birth s ▁Category : L iving ▁people ▁Category : V enez uel an ▁male ▁box ers ▁Category : O lymp ic ▁box ers ▁of ▁Venezuela ▁Category : Box ers ▁at ▁the ▁ 1 9 7