Cheetahs have survived devastating climate change and a resulting genetic bottleneck.
You've heard the expression "to heave your guts" used to refer to vomiting. In the case of frogs and toads, "heaving your guts" can have a literal connotation.
The same compounds that make people cry when slicing into an onion may also make them a healthy choice.
Ever wondered why we humans don't have spots or stripes? Well, maybe you haven't, but it is interesting that so many creatures are multicolored but we are not.
One common misconception people have regarding evolution is that the gradual changing of physical forms always benefits the species in question.
Humans may be evolving toward having less than thirty-two teeth.
Turning blue in the face is easier said than done.
Scientists have found that some urinary tract bacteria use a hair‑like fiber to avoid being flushed out.
Suppose your ancestors had lived in darkness for almost a million years. This is the world of the Mexican blind cavefish.
When losing is winning in the complicated social world of baboons.