Biologists like to say that reproduction is the ultimate investment, a costly gamble that shapes everything from lifespan to ...

Quite an advantage in today’s world.

Epaulette sharks can reproduce without any measurable increase in energy use, stunning researchers who expected egg-laying to ...

Furthermore, the team monitored shifts in blood and hormones while the mother sharks laid eggs, explained lead-author Carolyn ...

New research reveals walking sharks reproduction involves no extra energy use, challenging long-held beliefs about marine ...

Meet the walking shark, a species of shark that can walk on land, survive low oxygen environments, and reproduce without ...

A study based on a review of genetic and health information from more than 276,000 people finds strong support for a decades-old evolutionary theory that sought to explain aging and senescence. A ...