Ships have kept their propellers at the stern since 1839, and it turns out there are far more reasons for that than you'd expect. From rudder efficiency to shaft seal integrity to the difference ...

So you’ve connected a device to your PC via a USB port — but Windows doesn’t recognize it. What now? Before you assume the product (or your PC port) is broken, there are several USB troubleshooting ...

For new discoveries, everyday mysteries, and the science behind the headlines, follow NPR's ShortWave podcast . Over a century ago, the German psychologist Wolfgang Köhler conducted what became a ...