With wave power, it all seems pretty straightforward. Waves come from the wind. Wind power is already a big-time clean-energy source (producing about 2.5 percent of the world’s electricity and growing). Water is 784 times denser than air...
There have been three major eras in the history of science, as Johns Hopkins University astrophysicist and computer scientist Alex Szalay describes it. The first, which lasted for millennia, was empirical, involving mostly the recording of data...
At first blush, the key players in George Friedman’s World War III scenario seem to have been plucked from a random-country generator: Japan, Turkey, and… Poland? But take a step back. First, consider the source. Friedman, 68, has been in the...
Perhaps one day we’ll send a spacecraft to a rocky planet orbiting Proxima Centauri. And perhaps the first images arriving back from across 4.2 light years of space will feature a purple Proxima Centurian peering straight back into the camera. In...
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