The most famous ecosystem on earth, tropical rainforests contain more than two-thirds of the world’s plant species. You won’t see them all on your exotic vacation, but there are some of the most ...

Researchers have been baffled by tropical rainforest diversity for over a century; 650 different tree species can exist in an area covering two football fields, yet similar species never grow next to ...

The bloom of the purple orchid tree, native to south China, growing inside the Garfield Park Conservatory on the southside of Indianapolis on Jan. 13. The Conservatory contains more than 10,000 square ...