Add Yahoo as a preferred source to see more of our stories on Google. A new study shows that evolution may look neutral only because shifting environments prevent helpful mutations from taking over.

Nobody likes to wait, and we are willing to pay to avoid it. Expedited shipping, fast food and video streaming are all profitable because they reduce or eliminate that wait. You can test this by ...

Earlier this month, the corporation Anthropic announced that its latest model, Claude Mythos Preview, is too dangerous for public release. During testing, ...

Prefer Newsweek on Google to see more of our trusted coverage when you search. The story of how us humans—and other mammals—got our noses may have just gotten more complicated. This is the conclusion ...

The human body is a machine whose many parts—from the microscopic details of our cells to our limbs, eyes, liver and brain—have been assembled in fits and starts over the 4 billion years of our ...

Yet modern biology has revealed that cells are preternaturally sophisticated assemblages — literally automated, miniaturized factories. How could the evidence have been overwhelming but now orthodoxy ...

Biologists say the appendix isn’t useless after all. Evolution kept reinventing it, and it may help support gut immunity and ...

The human body is a machine whose many parts – from the microscopic details of our cells to our limbs, eyes, liver and brain – have been assembled in fits and starts over the four billion years of our ...

Most people know only two things about the appendix: You don’t need it – and if it bursts, you need surgery fast. That basic story traces back at least to Charles Darwin, the English naturalist who ...