Over 80 suspected mpox cases in Darfur spark outbreak fears among 700,000 displaced people. Read the latest health updates.

Scientists have reported it for decades: overpopulation can impair reproduction. Crowded chickens lay fewer eggs. Crowded ...

What do a thriving coral reef and a bustling city neighborhood have in common? More than you might think. A Perspective by ...

Population genetics is the study of the genetic composition of populations, including distributions and changes in genotype and phenotype frequency in response to the processes of natural selection, ...