Lots of kids wonder about this. Here are some of the basics.
The first description of the snake clitoris may change what we think we know about mating and courtship among the slithering reptiles.
Everyone is feeling the heat these days – even species that develop underground.
The women’s rights movement in the 1800s did not openly support legalizing abortion or birth control. But the reasons why are complex.
Seahorse fathers use different muscles and hormones to give birth than female animals.
In a huge milestone, researchers have grown a mouse embryo entirely from stem cells. Could humans be next?
Studying bee sperm is difficult because of the way it coils, but fluorescent light illuminates the head of the sperm. Sperm quality may indicate stress levels in the bee colony.
Americans have long said they generally support abortion rights, but understanding specific breakdowns of opinion across demographics, and the history of abortion beliefs, is also important.
We need more health workers and public hospitals to provide abortions, a common and essential health service.
Live birth has evolved independently more than 150 times. The underlying biophysical processes all look quite similar, but new research shows they use completely different genetic tools.
Cockroaches have been on Earth far longer than humans and may outlast us. Here are a few reasons why.
While most women who try for a baby will succeed, some won’t, and some will have fewer children than they had planned to have.
Breathless headlines of artificial intelligence discovering or restoring lost works of art ignore the fact that these machines rarely, if ever, reveal one secret or solve a single mystery.
People are exposed to toxic substances – like pesticides, chemicals in plastics and radiation – every day. A growing body of research shows that this exposure is causing a decline in male fertility.
Abortion and contraception were quite common among premodern Christians, who also celebrated women’s celibacy as superior to marriage and childbearing.
Poison can be a deadly defense that helps a mushroom make sure its spores are spread to new places to grow into baby mushrooms.
New findings suggest the loss of fertility at high temperatures is a major threat to the survival of some species.
Warnings of an end to human sperm production have been making headlines recently, now with the added threat of shrinking penises. Is this science or sensationalism?
Yellow crazy ants are one of the world’s worst invasive species. And it turns out they have unique systems of reproduction that make life in the queendom more complicated than we realised.
Our chemical environment appears responsible for an alarming plummet in sperm counts – in humans and in animals.