A child’s biological sex may not always be a random 50-50 chance
Some people’s biology may set them up to birth babies of a certain sex, explaining why a family with multiple children may have all girls or all boys.
Some people’s biology may set them up to birth babies of a certain sex, explaining why a family with multiple children may have all girls or all boys.
We summarize the week's scientific breakthroughs every Thursday.
Tracks of dinosaur footprints can hint at how fast the extinct animals moved. Here’s how guinea fowl can help fact-check those assumptions.