Every day, thousands of people around the world face one of the most difficult decisions of their lives: should they stay put, or flee? The documentary "Afghanistan: How We Choose" shows how several Afghans are confronting this dilemma.

The Rugezi Marsh in northern Rwanda is one of the country's most important reservoirs. But this pristine ecosphere is being sucked dry by extensive agricultural exploitation. International conservation group IUCN wants to halt the process.

The gruesome practices of poachers in Africa are taking an ever greater toll ¬- if the slaughter continues at this pace, in just two decades elephants and rhinoceroses could be completely extinct. A poacher's court is trying to help prevent this.

The gruesome practices of poachers in Africa are taking an ever greater toll ¬- if the slaughter continues at this pace, in just two decades elephants and rhinoceroses could be completely extinct. A poacher's court is trying to help prevent this.

It's a cruel business in Southeast Asia. Illegal farms raise Asian black bears to harvest their bile, used in Chinese traditional medicine. Now animal welfare activists from the NGO Free the Bears are trying to curb the brutal and illegal practice.

More than half of Germans live in big cities. Many children have only seen forest on TV or Internet. Often they have no direct interactions with nature. At the "Woodwalkers" outdoor preschool on the edge of Berlin, kids experience nature first hand.

More than half of Germany's population lives in major urban centers. Many children have only seen woods or nature preserves from TV or Internet. Often they have no direct interactions with nature. At the "Woodwalkers" outdoor preschool on the edge of the German capital Berlin, kids experience nature firsthand.

It's a cruel business in southeast Asia. Illegal farms raise Asian Black Bears to harvest their bile, which in China is thought to have healing properties. Now animal welfare activists from the NGO 'Free the Bears' is trying to stop the brutal and illegal practice.

Senegal is one of the world's leading peanut producers. However, the industry has taken a huge toll on the soil. Peanut farming has led to a lack of soil nutrients and erosion, and now much of the country's farmland is infertile.

Back in the 19th century, when Senegal was a French colony, huge peanut plantations were planted. Since then the western African nation has been one of the world's leading peanut producers. The industry has taken a huge toll on the soil. Peanut farming has led to a lack of soil nutrients and erosion. Much of the country's farmland is now infertile.