Until about five years ago, scientists believed the pregnancy hormone, human chorionic gonadotropin (hCG), was the culprit.

Molecular mechanism uncovered in mice by UC Santa Cruz researchers reveals how a father’s diet, stress, and other ...

Sexual behaviour among same-sex pairs is common in apes and monkeys, and a wide-ranging analysis suggests it does boost survival ...

Understanding the evolution of insect mating behavior is essential for explaining how early insects adapted to life on land.

Leeron is a New York-based writer who specializes in covering technology for small and mid-sized businesses. Her work has been featured in publications including Bankrate, Quartz, the Village Voice, ...