It's the third of a generous five Saturdays in the month of November. What did we do to deserve such a bounty of days off? In the last week, we reported on hundreds of developments in science. Here is ...

For more than a century, popular culture has promised that humanity will spread effortlessly across the Solar System, turning ...

In 1949, famed mathematician and physicist John von Neumann delivered a series of addresses at the University of Illinois, where he introduced the concept of the "universal constructor." The theory ...