Scientists have documented same-sex behavior in many animals. Learn what it means, how it varies, and why human labels can mislead.

Both the UK and US Governments have pledged to end research using animals, but is such a goal realistic? And how might it change medical research? Talha Burki reports.

A new study has uncovered a hidden step that helps the deadliest malaria parasite survive and multiply inside the human body. Researchers studying Plasmodium falciparum found that the parasite relies ...

As commercial spaceflight draws ever closer and time spent in space continues to extend, the question of reproductive health ...

dDepartment of Global Health and Social Medicine, Harvard Medical School, Havard University, Boston, MA, USA eDivision of Global Health Equity, Department of Medicine, Brigham and Women's Hospital, ...

An international research team has announced the most complete fossil yet of Homo habilis (aka 'the handy man') – one of the earliest known members of our genus. The 2-million-year-old partial ...