Whose side will the scientific community take? The How and the Why, a play about two female evolutionary biologists at opposite ends of their careers, will have its Chicago-area premiere at ...

Female praying mantids are known for eating their mates, but what is the evolutionary advantage ... have nothing to do with each other. Some biologists say it's simply hunger: The females, which ...

After debating this question for the past 150 years, biologists still cannot agree ... male giraffes are also about 30% to 50% larger than female giraffes. All of their body components are bigger.

Only identified as a species separate from chimps in 1929, bonobos intrigue biologists with their easygoing ways, sexual equality, female bonding ... What evolutionary advantages do these ...