Green anoles are less frequently seen near the ground as brown anoles become more prolific, instead evolving to a better suited life in the tree canopy. (Augustus Hoff/WUFT News) She sits, her sleek, ...

How can you tell two species apart? You would never confuse a human with a chimpanzee, even with their shared ancestry. A manatee could never be mistaken for an elephant, despite their close relation.

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. In a Costa Rican ...

CORAL GABLES — Fairchild Tropical Botanic Garden may look serene at first glance, but beneath the resplendent orchids and majestic banyans, two invasive lizards are waging a turf war. The war started ...