The author Cory Silverberg bucks decades of conventional wisdom on how to teach kids about intimacy.
Researchers are gaining a better understanding of the biochemical processes that precede female octopuses’ deaths after they lay and then tend their eggs.
Intrauterine devices are highly effective, but some women find insertion painful. Here’s how to prepare.
After years of engaging with parenthood from a distance, it’s time for a psychiatrist specializing in women’s mental health to take her own advice.
A study of Australian fish that care for offspring through mouthbrooding shows that things underwater are not always as monogamous as they seem.
Some pairs of cranes in India, known for their monogamous devotion, seem to bring in a third bird to act like a kind of avian au pair.
Yakei, the 9-year-old macaque who seized power at a preserve, played the field and mated with at least one male, all while managing to maintain her status as her troop’s alpha.
Vaccine debates, pandemic parenting and general burnout have converged to create yet another shortage in the United States: of women willing to carry other people’s babies to term.
Is it time to rethink the potential of a much-maligned female organ?
An influx in donations to clinics and abortion funds has thrown a financial lifeline to patients
To bring abalone back from the edge of extinction, scientists need to find improved ways of coaxing the snails into reproducing.
Yakei became a rare alpha female of a macaque troop in a nature reserve, but a kind of simian love triangle may endanger her grip on power.
Scientists discovered a mammoth nesting ground with an estimated 60 million icefish nests in the Weddell Sea.
An analysis of thousands of menstrual records offers support for anecdotal reports of erratic cycles after shots.
I.V.F. patients are faced with a growing list of costly “add-ons.” For one such test, some say more robust research is needed to support its effectiveness.
How increased access to one medication could fundamentally change the debate over abortion across the country.
Scientists were surprised to discover that at least one bat species carries its young to an unsupervised drop-off point night after night.
Warming oceans are sending the monogamous sea birds farther afield to find food, putting stress on their breeding and prompting some to ditch their partners.
A discovery in the Pacific Ocean off California leads to “an ‘Indiana Jones’ mixed with ‘Jurassic Park’ moment.”
The rare discovery came about as a result of efforts to preserve the species.
New research using hundreds of DNA samples showed that there are seven species of these hand-standing, stink-spraying mammals.
Among white-necked Jacobin hummingbirds, those with plumage that resembles colors found on males get harassed less.
Sea snakes aren’t angry when they aggressively swim at divers, scientists say. They’re just confused and looking to mate.
Reports of a decline in male fertility rely on flawed assumptions, a new study contends.
It’s time to take a look at the role religion plays in American law and jurisprudence.
The previous policy, which predated the Trump administration, required a child born abroad to have a biological connection to the American parent.
The royal matchmaking service may help these insects avoid inbreeding.
A photographer in Berlin is capturing the lives of the consciously child-free.
“It was like rolling the dice, except for someone you’ve never met.”
Amid the pandemic, I.V.F. rates are on the rise, and so are disputes about what to do with remaining frozen embryos when couples split up. For some, it has gotten messy.
In “Count Down,” Shanna Swan tells a story of declining sperm count, rising infertility and the possible extinction of the human species.
Scientists are concerned by falling sperm counts and declining egg quality. Endocrine-disrupting chemicals may be the problem.
Males and females of a species that mates monogamously complete their bond by gnawing off each other’s wings, a new study found.
Conservationists confirmed that a Swinhoe’s softshell turtle found in Vietnam is female, reigniting hope for saving the species.
Scientists were surprised to find the insect’s preserved penis, which suggests it was an unknown species.
This cloaca is more than 100 million years old, and it did a lot of work for this extinct species.
A team of scientists say they have figured out the cicada-like life cycles of the many-legged arthropods.
Nature’s weirdest clam surprises scientists once again, this time in video footage of its mating habits.
Many people want a pandemic baby, but some sperm banks are running low. So women are joining unregulated Facebook groups to find willing donors, no middleman required.
A surprise clutch of eggs has solved a century-old leaf insect mystery.
Wrinkle-faced bats incorporate whistles, wing flaps and furry masks into their mating rituals, researchers have found.
These male monkeys lived longer if they socialized with females, with or without benefits.
Two recent research efforts looked into the southern alligator lizard, which has one of nature’s more extreme mating strategies.
While many fossils have been flattened by time and the elements, a titanosaur found in an egg was preserved in three dimensions.
On occasion, different species of angelfish produce hybrid offspring even more colorful than the parents.
A Brazilian frog species engages in reproductive behavior never seen in amphibians before.
We’re on the cusp of a technological revolution in baby making. What it means to be a family could be next.
For service members like me, Tricare health insurance and the limited number of military medical facilities offering fertility treatments add more stress to an already emotional process.
Commingling tissues and blood would normally prompt a massive immune response. These deep sea lovers found a workaround.
Many mammals that have loud calls to deceive other animals seem to have a particular learning style in common.