What’s 8 feet across, 14 feet long, and weighs almost 800 pounds? The world’s biggest freshwater fish. And it’s no ordinary fish, it’s a giant freshwater stingray, also known as a freshwater whipray. The ray was captured in Thailand’s Mae
Quick-change camouflage
Scientists now know how chameleons change colors. Known for their ability to blend in with the environment, chameleons have been famous for their color-changing abilities since Aristotle first described them over 2,000 years ago. Most of the time, chameleons are