Keep them in the dark for a million years. Then cross two strains of cave-dwelling fish, now totally blind. It turns out some of their kids will be able to see. Fish and other creatures lose their ...

The cave formations in China's southwest Guangxi Zhuang region almost look like a different world. Centuries of dissolving limestone rock, a geological process known as karst, have resulted in ...

THE blind fish of the Mammoth Cave has from its discovery been regarded with curiosity by all who have heard of its existence, while anatomists and physiologists have considered it as one of those ...