Ducks with corkscrew penises, fish changing sex – what do we really know about sex and reproduction on Earth? Less than we think, reveals a mind-boggling new book. Elle Hunt explores ...

The Amazon molly is an all-female fish that ditched sexual reproduction entirely, thriving for over 100,000 years through ...

The hectocotylus is both a reproductive and sensory organ, Harvard scientists and others have found. Octopuses are some of the most mysterious animals living in the sea. In research out today, however ...

Serially cloned mice hit a genetic “dead end” by generation 58, underscoring that sex evolved for variation, purging harmful ...

Weizmann Institute researchers find that yeast born to preferred partners are fitter than those from one-night stands, ...

The idea that modern humans inherited DNA from Neanderthal ancestors is one of the 21st century’s most celebrated discoveries ...

Worms reduce inflammation only on high-fiber diets; low fiber disables their benefits and disrupts gut health.

Research findings are available online in the journal Communications Biology. The original story “ Getting pregnant in space isn’t that easy, study finds ” is published in The Brighter Side of News.

Dozens of new discoveries reveal that defenses evolved by bacteria and viruses billions of years ago still define our own ...

This semi-aquatic mammal may look improbable, but its biology reveals how evolution shapes even the strangest mammal bodies.

Going by the headlines, the matter seems to be settled. El País announces that Neanderthal men "chose" sapiens women. Science ...

A growing number of young women are experiencing hormonal imbalance and fertility-related issues much earlier than previously ...