Is it just me or is the A Crack In The Sky future starting to feel less and less like sci-fi?
Heat-Trapping Gas Passes Milestone, Raising Fears THE NEW YORK TIMES, May 10, 2013 The level of the most important heat-trapping gas in the atmosphere, carbon dioxide, has passed a long-feared milestone, scientists reported Friday, reaching a concentration not seen on the earth for millions of years…The best available evidence suggests the amount of the gas …