Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient world slept only 6.5 hours a night.
Recent data tell us that tropical Africa has lost about 22 per cent of its forested a. rea since 1900, which is comparable to the losses in the Amazon.
New research from a team of tropical biologists forecasts some of the changes that may occur in the Amazon rainforest as temperatures rise due to climate change.