Scientific American

Some clinicians are pushing to broaden testosterone use, but there is debate about its benefits and risks

The Pentagon has started releasing files related to unidentified anomalous phenomena (UAP), also called UFOs. Here are the images released so far

A growing minority believes it’s a mistake to tie so many mathematical formulas to the famed 3.14... value. Another value, tau, could be better

Statistical principles show you don’t need a nefarious plot to explain clusters of missing scientists and lab workers

The Deep Underground Neutrino Experiment will study nature’s most mysterious particle a mile beneath South Dakota’s Black Hills and will potentially reveal the origins of matter

Here are some of the most fascinating facts about animal moms, from naked mole rats to giraffes and octopuses