Working out in artificial gravity

Astronauts on the International Space Station (ISS) have a number of exercise options, including a mechanical bicycle bolted to the floor, a weightlifting machine strapped to the wall, and a strap-down treadmill. ...

dateJul 02, 2015 in Space Exploration
shares83 comments 7

Lady, you're on the money

So far, women whose portraits appear on U.S. money have been a party of three. Excluding commemorative currency, only Sacagawea, Susan B. Anthony and Helen Keller appear on coins in general circulation, according ...

dateJul 03, 2015 in Other
shares17 comments 7

Encryption made easier: Just talk like a parent

Encrypting emails can be tedious, difficult and very confusing. And even for those who have mastered the process, it's useless unless the intended recipient has the correct software to decode the message. ...

dateJul 03, 2015 in Software
shares73 comments 5