dr. murray watson. >> have you heard of a guy named dr. murray watson? mostly in the '70s and early '80s. >> reporter: watson had taken these images of somalia in the 1980s, which show a country lush with life. his disappearance remains a mystery to this day. >> i think we found the spot where this photograph was taken. >> reporter: using his photos as a guide to track how the land has deteriorated, they trek across the country, meeting the people whose lives have been shattered by a changing environment. momina fereh has spent weeks crossing this desolate landscape. she's part of a community trying so far in vain to find fertile land. >> translator: we call it duga, or bury. it has buried everything. >> reporter: a severe drought set in two years ago is drying up food and water and killing the livestock, a lifeline for these communities. >> translator: i lost 100 goats, 10 cows and camels, and four donkeys. it has already killed the animals. we believe humans are next. >> with this weather pattern somalia or somalis will not survive. maybe the land, a pi