For all the talk about settling Mars, the Moon, or other extraterrestrial environments, it’s interesting that no one ever ...

Researchers mapped early brain growth from mid-pregnancy to the first month after birth and found signs that sex-linked differences emerge surprisingly early.

In many species, sex isn’t fixed for life, and some animals can switch from male to female as part of a reproductive strategy. This process, called sequential hermaphroditism, allows individuals to ...

As the county pioneers two days of monthly leave, employees share stories of stigma, relief, and a hope for wider change amid ...

The Surinam toad has an unusual trick for reproduction: instead of leaving their spawn in water to develop, once the eggs are laid, the male presses them into the female's back.

Groundhogs emerge from their burrows around Feb.4. This fits the folklore of Groundhog Day, but predicting the weather is not ...

These “walking sharks” can lay eggs without spending extra energy, rewriting what scientists thought they knew about reproduction.

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

Women in India were told they couldn't be paid for their eggs. The result: a black market for eggs from women in need of ...

Scientists at the Max Planck Institute for Biology have discovered a remarkably streamlined strategy for developmental ...

New research shows that epaulette sharks, often called “walking sharks,” can produce eggs without increasing their overall energy use.

Researchers at the Icahn School of Medicine at Mount Sinai, in collaboration with other leading institutions across the ...