Deforestation

Officials are estimating that within 30 years, the combined impact of urban development, climate change and a chlamydia outbreak will cause koalas to go extinct.

Controlling fire has never been a strong suit for humans. Now, as climate change sets in, the need for better fire management is becoming dire, according to researchers.

A new plan is taking form in Brazil to regularize titles to rainforest land -- an effort the government hopes will fight deforestation.

As part of a new strategy to prevent deforestation in the Amazon, government officials in Brazil have begun seizing livestock that graze on illegal ranches.