The recent discovery of an Earth twin has boosted chances there is intelligent life on other planets. But while Pope Francis's telescope scans the starlit skies, the Vatican is sceptical of ever meeting Mr. Spock.
6 hours ago in Astronomy
One city banned Styrofoam. Another has the highest percentage of "clean" cars in Europe. Still another has cut greenhouse gas emissions by 29 percent since 1990—while seeing its GDP grow 19 percent.
Jul 20, 2015 in Environment