Lake Natron is a soda lake in northern Tanzania with a volcanic geology that maintains the water's pH around 10.5, which is almost as caustic as ammonia. Some life-forms thrive there nevertheless.

Blood splatters along Crescent Lake in the Kenai Peninsula of Alaska have prompted a social media debate. What died? Luc Mehl photo A mysterious discovery of blood-splattered snow along a lake in ...

Between Africa and Arabia lies an island of rare biological oddities—one that’s buffeted now by development, cyclones, and civil war. The Socotra dragon's blood tree, Dracaena cinnabari, can ...