Evolution
Why Is Everything an Orchid?
Orchids were Darwin’s “abominable mystery.” They continue to elude science—and efforts to save them.
Wildfires Are Changing Animal Evolution
Adaptations that once saved creatures are now putting them in peril.
Animal Sex Determination Is Weirder Than You Think
Parasites, weather, and luck can play a role in determining whether some animals are male or female.
The Spiritual Materialist
How transcendent feelings arise from the forces of Darwinian natural selection.
Another Path to Intelligence
Octopus brains are nothing like ours—yet we have much in common.
The Evolutionary Mystery of Menopause
New studies reinforce the hypothesis that grandmothers fostered our evolutionary success.
The Giraffe Neck Evolved for Sexual Combat
Discovery of a previously unknown ancient giraffe species offers a new look into sexual selection and evolution.