Universes with different physical laws might still be habitable
The poorest people are not only poor. They are also chronically sick, making it harder for them to escape poverty. A new global initiative may break the vicious cycle
Once believed to be the smallest pathogens known, nanobacteria have now proved to be something almost as strange. They do play a role in health—just not the one originally thought
Did asteroid strikes during the earth's youth spawn the earliest fragments of today's landmasses?
Worry has focused on the U.S. versus Russia, but a regional nuclear war between India and Pakistan could blot out the sun, starving much of the human race
Online fantasy games enable developing world entrepreneurs to make a living by trading stashes of make-believe gold for hard cash
Designers are pushing all the boundaries to make integrated circuits smaller, faster and cheaper
Deadline: Jun 29 2013
Reward: $7,000 USD
The Seeker for this Challenge desires proposals for chemical methods that could rapidly degrade a dilute aqueous solution
Deadline: Jul 15 2013
Reward: $5,000 USD
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