Are humans still evolving? "Maybe more rapidly than ever," says scientist
Cultural and technological innovations appear to be the main drivers of adaptation. But have they replaced biological adaptation?
Why some men can't make sperm
A single genetic mutation in proteins involved in the cell division process that creates sperm—known as meiosis—may be responsible for some men's infertility.
Sea ice decline has devastating effect on Emperor Penguins
"The overall population of the species will reduce rapidly over the coming decades," researcher Peter T. Fretwell told Newsweek.
Scientists discover secret to virgin births
"It was very exciting to see a virgin fly produce an embryo able to develop to adulthood," a researcher at the University of Cambridge said.
Crocodile virgin birth discovery suggests dinosaurs could do the same
Researchers documented a virgin birth in an American crocodile—the first time this unusual mode of reproduction has been seen in crocodilians.
Cannibalistic female spiders play dead during sex
Scientists have found that female spiders that usually eat males after sex choose to pretend to be dead for those they want to mate with the most.
Scientists create mice with two fathers and no mother: "revolutionary"
Researchers turned male body cells into egg cells with two X chromosomes, which were then fertilized with another male mouse's sperm.
Shoebill: Africa's giant, weird prehistoric-looking bird
The massive shoebill, a 5-foot-tall dinosaur-like bird, is listed as a vulnerable species due to its habitat being destroyed.
Horny marsupials' high sex drive may be driving them closer to extinction
Male northern quolls walk up to 6.5 miles a night to find a mate, which may be the reason for them living shorter lives than the females.
Flies that grow giant testes produce only female offspring
The stalk-eyed fly compensates for its lack of male-bearing sperm.
The Y chromosome is going to disappear, scientists say
"The human Y is in the very last stages of degeneration, and the big question is how long till it, too, gets lost," expert Jenny Graves told Newsweek.
Extremely rare kitten born with no genitals or reproductive organs rescued
Hope the kitten, who was found homeless at 15 weeks old with a rare genetic variation, is now up for adoption and should not be negatively affected.
China to send monkeys to space to have sex: What could go wrong? A lot
Adam Watkins, an associate professor in reproductive and developmental physiology, told Newsweek why he thought sex in space will not be easy.
Woman Impregnates Herself With $30 Sperm From Local Donor
Bailey Ennis found a donor who had previously helped LGBTQ couples become parents and says she is loving life as a single mother.
Women's Essay Contest Hosted by Government Backfires: 'Not Exactly Equal'
Many readers compared the third-place essay to something out of a dystopian novel, such as "The Handmaid's Tale."
Tick Survives 27 Years in Researcher's Lab, 8 Years Without Food
One female also managed to store sperm for at least four years and then successfully reproduce from it.
'We Created Living Robots That Self-Replicate'
The Xenobots can self-heal, and they reproduce in an entirely different way—Xenobots build other Xenobots.
Video Shows Mussel Mimicking Fish as Part of Parasitic Reproductive Process
Plain pocketbook mussels flap their mantles in order to attract an unwitting larval host for their young.
Here's What Human Eggs Look Like Compared to a Dime
Women are born with all the eggs they'll ever produce, around two million. This number steadily declines until menopause.
Daughters of Women With PCOS Five Times More Likely to Develop Condition
Women can wait up to two years to be diagnosed with the condition, a researcher looking for its cause told "Newsweek."
Clitoris Isn't Just for Female Pleasure. It Also Helps With Reproduction
The research could change our understanding of the female anatomy.
Last Year's Extreme Snowfall Caused 'Reproductive Failure' in Arctic
Although poor reproduction rates have been known to affect individual species in the past, this is the first time such low reproductive rates have been seen at every stage of the ecosystem.
Males of This Tiny Mammal Species Die En Masse After Single Mating Season
This type of mating behavior, where a generation of males die off in their first season, is very rare in the animal kingdom.
Sex Evolved Because It Protects Against Rare Contagious Cancers: Scientists
Scientists hope their theory could one day pave the way for new ways to prevent cancer.
Baby Jumping Spiders Suckle Milk From Their Mothers
Female jumping spiders produce fluid with four times the amount of protein found in cow's milk.
Bee With Two Fathers and No Mother Discovered
Scientists also documented bees that had three fathers and one mother.
Two Texas Women Carry One Baby in World First Procedure
"Nobody really knew it was possible—but it worked magnificently," the couple's fertility doctor said.
Good Gorilla Fathers Are More Reproductively Successful
This remained true even when the gorilla cared for kids that weren't his own.
Chinese Scientists Create Mice With Same-Sex Parents
The research could one day be used to help human same-sex couples reproduce.
Armpit Sniffing Study Reveals Secrets of Female Scent
Scent is thought to play an import role in who we find attractive.