Astronauts on the International Space Station have a zero-g cup for their java. Credit: NASA Johnson Space Center ...

If you’ve ever traveled abroad to a place where the local currency is much different in value from the U.S. dollar, you’ve probably found yourself scrambling to calculate the differences in price when ...

NPR's Ailsa Chang speaks to mathematician Eugenia Cheng about the Pascaline -- a 17th-century invention credited as the first mechanical calculator.

Objectives This study aimed to estimate the frequency of depression in mothers during the antepartum and postpartum periods ...