Humans spread across the globe in 300,000 years through cultural evolution, a feat that would have required 88 million years of biological evolution alone.
Extreme nighttime heat during early and late pregnancy is associated with a modest increase in autism risk, highlighting climate-related prenatal concerns.
Scientists have identified molecular switches that allow aggressive cancers to change identity and resist treatment, opening paths to more precise therapies.
Maternal immune activation reprograms the fetal brain, increasing alcohol-seeking behavior after adolescent exposure. Prenatal antioxidants act as a key preventive.