Roe deer pause development of their embryos for months, and researchers just learned how
An embryonic phenomenon discovered over 150 years ago may finally have an explanation
A controversial new study shows how male rats can become pregnant and give birth
Scientists have debated whether the scientific progress justified the invasiveness of the procedure
Biologists grow mouse eggs in mini ovaries developed from stem cells
The advance could generate new solutions to for human fertility issues
When sperm can’t modify their proteins, their motors stop swimming
New study validates long-suspected biological reason for sperm-based infertility
The neurons that make fruit flies interested in sex are turned on by song
Fruit flies go so far as to have species specific melodies and chords
Female scorpions pay a steep cost when they shed their tails for survival
Many species shed limbs and tails to escape sticky situations
_mating.jpg?auto=format&fit=max&w=3840 "A pair of Marsh fritillaries (Euphydryas aurinia) mating, male left and female right,")
Mating plugs and other weird butterfly sex habits
Male butterflies want monogamy. Females, not so much.
In the future, a simple blood test could identify who will develop pre-eclampsia
Pre-eclampsia is the second leading cause of maternal mortality, and symptoms don't manifest until late in a pregnancy
Microscopic worms pee milk on their children as their bodies decompose
C. elegans turn their aging bodies into food for their children
New case study shows that COVID-19-positive people don't transfer the virus through donated eggs
If confirmed broadly, the finding is great news for those seeking reproductive therapy
A 540 million year-old microscopic protist sex mystery is solved
How tiny, shelled protists reproduce helps explain their strange evolutionary patterns
A new shape-shifting species of tardigrade with spiky eggs stumps scientists
These tardigrades are able to change their eggs' appearances seemingly at random
Female capybaras control their own mating destinies
New research shows that they are more choosy about which males they mate with than previously thought
There might be some problems when we try to make babies in space
Biologists sent brain organoids to the International Space Station to figure out how microgravity will affect developing babies
Scientists grafted frozen testicular tissue and produced viable sperm for the first time
A newborn monkey named Grady gives hope for restoring fertility to men who underwent cancer treatment as kids
The US-Mexico border is making life complicated for green sea turtles
How do you protect animals that move seamlessly between jurisdictions?
The slap-dash nature of evolution makes entertaining reading
Nathan Lents' new book details the accidental, incidental nature of human quirks
Three facts about Helen Rodríguez-Trías, pediatrician-turned-healthcare activist
She pushed to end sterilization, legalize abortion, and give poor people access to quality healthcare
How do mosses reproduce? By spreading their seed on everything
Come for the soft and cool outdoor perch, leave covered in moss sperm