Newsweek magazine delivered to your door Newsweek Voices: Diverse audio opinions Enjoy ad-free browsing on Newsweek.com Comment on articles Newsweek app updates on-the-go ...

Like a steampunk fantasy-world, which pairs high-tech with an old-timey setting, Nicole Yunger Halpern melds old and new science.

A clock with hands (an analogue clock) shows us the numbers 1-12. There are 24 hours in one day, so we measure time by splitting the day into two halves. The first 12 hours of the day, from ...

To keep up to date with the latest Number 1s each week, sign up to our newsletter. Unsubscribe at any time.

A large, ordinary-looking warehouse in the German city of Cologne is the closest you can get to walking on the moon—without leaving Earth. At the International Space station, researchers are ...