Once a seed germinates, it is committed to one location. Plants are sessile—stuck where they started out—forced to cope with ...

Early in development, many animals pick a team—male or female—based on their genetics, and, with time, acquire the ...

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

Octopuses are famous for their problem‑solving brains and shape‑shifting bodies, yet their lives end in a way that looks more ...

Men assess potential rivals that have a larger penis as more of a threat, both physically and sexually, according to a study ...

Washington — The Department of Homeland Security said Tuesday it was replacing its longstanding lottery system for H-1B work visas with a new approach that prioritizes skilled, higher-paid foreign ...

The 'Today' co-anchor made the shocking revelation during the "Girl Code" segment with Jenna Bush Hager Liza Esquibias is a Writer-Reporter on the TV team at PEOPLE. She was previously an Editorial ...

Background: Male infertility accounts for approximately 50% of all infertility cases, and its pathogenesis is highly complex. Beyond traditional factors such as genetics, endocrine disorders, and ...

If there were to be a “best dad” award in the animal kingdom, seahorses would be a shoe-in. That’s because males, not females, of these peculiar fish carry their young to term. They fertilize and ...

The male reproductive system is made up of the parts inside and outside the body that help a male make a baby. Both the male and female reproductive system are needed for this. The male reproductive ...

Reproduction is the process by which organisms make more organisms like themselves. But even though the reproductive system is essential to keeping a species alive, unlike other body systems, it's not ...