Lauren Leffer

We’re in a biodiversity crisis, but it's tough to compare it to past periods of mass death.

A chemical in acne medicine can help regenerate limbs

Fees and restrictions on single-use grocery bags mean less trash enters the ecosystem.

'It’s surprisingly similar to what is recommended in humans for the length of a power nap.’

Science is slowly revealing more about the misunderstood organs.

No one quite knows how the tar-like substance got on a Great Lakes research vessel.

From bizarre food rants to midnight cursing fits, sleep talk reveals the strange ways our brains short-circuit while we rest.

The 10,000 steps goal originated as a 1960s marketing strategy.

Re-training your toes can give your feet a much-needed workout.

Getting extra sweaty doesn't necessarily lead to fitness success.