ant with wings on white background
Secret to Reproductive Ants’ Longevity Revealed
Researchers say they've figured out how some reproductive ants live up to 30 years—far longer than workers.
Secret to Reproductive Ants’ Longevity Revealed
Secret to Reproductive Ants’ Longevity Revealed

Researchers say they've figured out how some reproductive ants live up to 30 years—far longer than workers.

Researchers say they've figured out how some reproductive ants live up to 30 years—far longer than workers.

reproduction
dark image with red ring
How Immature Egg Cells in Ovaries Resist Aging
Shafaq Zia | Aug 4, 2022
The cells’ mitochondria skip a key metabolic reaction that takes place in other cells in the body, a study finds.
Green fruit hanging in a tree
Trees’ Scent Tricks Hornets Into Shuttling Seeds
Natalia Mesa | Jun 30, 2022
Agarwood fruit smells like prey, luring carnivorous hornets, a study suggests.
John Glass describes why researchers constructed a synthetic unicellular organism and how it unravels the secrets of evolution.
The Scientist Speaks - DIY Cells: Understanding Life with a Synthetic Minimal Cell
Sejal Davla, PhD
John Glass describes why researchers constructed a synthetic unicellular organism and how it unravels the secrets of evolution.
Ctrl+C and Ctrl+V computer keyboard button with cable isolated on white background
Opinion: The Reproductive Technology Advances No One Asked For
John D. Loike and Alan Kadish | Jun 22, 2022
Cloning and parthenogenesis of humans wouldn’t align with bioethical principles.
brown spotted octopus blending in with its background
Steroids May Explain Octopuses’ Self-Starvation
Andy Carstens | May 16, 2022
Two glands increase steroid production after female California two-spot octopuses mate, a study finds. Those hormones may be responsible for the animals’ self-destructive behavior.
Image of sperm hooks (<em>Peromyscus maniculatus</em>)
The Mystery of the Mouse Sperm Hook
Natalia Mesa | May 2, 2022
Nearly all mouse sperm have hooks on their heads. But new research suggests the structures slow them down—so what exactly is their purpose?
Philoponella prominens spiders mating
Spiders Catapult Themselves to Avoid Becoming Their Mate’s Meal
Hannah Thomasy | Apr 25, 2022
During their escape, male spiders can reach speeds in excess of 3 kilometers per hour thanks to their springy front legs.
Pink rat pups piled on top of each other.
Rat Sperm Generated from Stem Cells
Alejandra Manjarrez | Apr 7, 2022
Researchers report they were able to make functional sperm in a dish, a feat previously only possible for mice.
illustration of a mitochondrian inside a cell
Could Dad’s Mitochondrial DNA Benefit Hybrids?
Alejandra Manjarrez | Jan 20, 2022
Studies have found that organisms can inherit mitochondria from male parents in rare instances, and both theoretical and experimental work hint that this biparental inheritance is more than just a fluke.
collage of images related to favorite stories, including black and white photo of flowers, illustration of two rats, human body with floating coronaviruses
The Scientist Editors’ Favorite Stories of 2021
The Scientist Staff | Dec 28, 2021
A look back at some of the articles we most enjoyed reading, writing, and editing this year
colored microscope photo of xenobot
“Xenobot” Living Robots Can Reproduce
Chloe Tenn | Dec 2, 2021
Biological robots made from frog cells can replicate by smooshing loose cells into new robots—a reproduction method not seen in any other organism.
Pink-toned illustration of the uterus with a zoom of the inflamed cervix and of the uterine endometrium and immune cells found there
Infographic: Research Questions to Be Tackled by Uterus Transplants
Jef Akst | Aug 1, 2021
Scientists are banking various samples from recipients of donated uteruses to learn all they can about the biology of the organ, and about transplantation more generally.
An illustration of flowers in the shape of the female reproductive tract
Uterus Transplants Hit the Clinic
Jef Akst | Aug 1, 2021
With human research trials resulting in dozens of successful deliveries in the US and abroad, doctors move toward offering the surgery clinically, while working to learn all they can about uterine and transplant biology from the still-rare procedure.
Opinion: How Biomedicine Could Transform Human Reproduction
Henry T. Greely | Aug 1, 2021
CRISPR and other innovations are likely to open up a wealth of new options for how people have children.
Illustration of two rats, one male and one female, that are surgically joined. The male has a uterus transplanted in, and both have embryos transplanted into their uteruses.
Study that Impregnated Male Rats Stirs Controversy
Andy Tay | Jun 25, 2021
A combination of approaches, including uterus transplantation and the joining of two animals’ circulatory systems, allowed males to bear pups, according to a preprint. But some experts say the experiments were not justified.  
Magnified image featuring a full view of a bdelloid rotifer recovered from permafrost (labeled A) along with two insets: one side view of the organism’s head (labeled B) and a view of its mouthparts (labeled C)
Rotifers Bounce Back After Being Frozen for 24,000 Years
Lisa Winter | Jun 8, 2021
The hardy animals were pulled from the permafrost in Siberia, giving scientists the opportunity to study how they survive extreme conditions.
Wild water striders (Microvelia longipes) on a puddle. The animals with long third legs are the males; the others are females.
A Multipurpose Gene Facilitates the Evolution of an Animal Weapon
Viviane Callier | May 11, 2021
A single gene called BMP11 regulates not only the size and proportions of a water strider’s massively long third legs, but also how it uses the limbs in fights.
Pink background with menstrual products off to the right
No Proof COVID-19 Vaccine Affects Menstruation or Fertility
Lisa Winter | Apr 27, 2021
Following vaccination, some women claim their periods have changed, leading to rumors about how the shots affect recipients’ reproductive systems, and even others’ by proxy.  
pcos polycystic ovary syndrome hormone amh epigenetics methylation transgenerational inheritance
Polycystic Ovary Syndrome May Be Inherited Epigenetically
Katarina Zimmer | Feb 9, 2021
Female mice modeling the hormonal disorder can pass symptoms down for several generations, likely via changes in genome methylation that are similarly observed in women with PCOS.