Reproduction
Climate Change Is a Wake-Up Call for Hibernating Squirrels
As spring arrives sooner, female Arctic ground squirrels are emerging from their burrows earlier, according to a new study
Scientists Create 'Synthetic Embryos' From Monkey Cells
By studying lab-grown stem cells, scientists hope to shed light on miscarriages and birth defects
These Male Ants Have Two Separate Sets of DNA
A genetic condition called chimerism may have helped yellow crazy ants become a dominating invasive species, a new study suggests
Cockroach Sex Is Evolving in Response to Pesticides
A new study highlights the insects' resiliency in spite of human attempts to kill them
90-Year-Old Tortoise Fathers His First Offspring at Houston Zoo
Critically endangered radiated tortoises don’t reproduce often, so this is a win for the species
Why Did Scientists Wait So Long to Study the Snake Clitoris?
The delay is representative of a major problem in biology: Female and intersex animals are understudied compared with their male counterparts
How Lunar Cycles Guide the Spawning of Sea Creatures
Researchers are starting to understand the biological rhythms that sync worms and corals to phases of the moon
Scientists Discover Oldest Known Fossils of Pollen-Carrying Insects
It’s unclear whether the creatures were pollinating prehistoric plants or just getting a snack
Male Birth Control Drug 'Stops Sperm in Their Tracks' in Study of Mice
The drug served as a quick-acting, temporary contraceptive with no noticeable side effects, researchers say
Too Much Sex and Too Little Sleep Can Kill These Endangered Marsupials
A study finds male northern quolls forgo rest to travel up to 6.5 miles in one night in search of a mate—the equivalent of a human walking 25 miles
Scientists Uncover Nearly 100 Dinosaur Nests in Fossilized Hatchery
The find reveals that plant-eating titanosaurs had reproductive similarities to both birds and crocodiles
Seven Scientific Discoveries From 2022 That May Lead to New Inventions
Nature is a breeding ground for innovative solutions to everything from aging to plastic pollution
Paleontologists May Have Solved the Mystery Behind a Prehistoric Reptile Graveyard
Ichthyosaur mothers likely migrated to the site to give birth
Human Sperm Counts Declining Worldwide, Study Finds
Researchers disagree on whether the trend has implications for human fertility
The Underground Abortion Network That Inspired 'Call Jane'
A new film offers a fictionalized look at the Janes, activists who provided illegal abortions in Chicago before Roe v. Wade
This Moonshot for Coral Breeding Was Successful
But the coral are still in tanks, waiting to be released on reefs
The Utterly Engrossing Search for the Origin of Eels
To save the endangered animals, researchers have been working for decades to figure out where they reproduce
Bull Sperm Get by With a Little Help From Their Friends
Traveling together helps the sperm navigate a tricky, sticky migration through a cow's reproductive tract
The Sucky History of the Breast Pump
Efficient, double electric pumps are only 30 years young, but contraptions for expressing breast milk have been around for millennia
Who Was Norma McCorvey, the Woman Behind Roe v. Wade?
Dubbed "Jane Roe," McCorvey sought an abortion after becoming pregnant in 1969 but was thwarted by Texas' restrictive reproductive laws
