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By Sharon Begley NEW YORK (Reuters) - When at least 80 tornadoes rampaged across the United States, from the Midwest to the Gulf of Mexico, last Friday, it was more than is typically observed during the entire month of March, tracking firm AccuWeather.com reported on Monday. According to some climate scientists, such earlier-than-normal outbreaks of tornadoes, which typically peak in the spring, will become the norm as the planet warms

By Quirin Schiermeier of Nature magazine Climate scientists warn that critical gaps in climate data could open up after the current generation of Earth-observation satellites comes to the end of its life, with the next generation nowhere near ready to take over. The problem is exacerbated by the lack of an adequate replacement for a pair of Earth-observation satellites, the Orbiting Carbon Observatory and Glory, which failed on launch in the past two years. Earth-observation programs will fail to provide the data continuity required for climate science unless they are more adequately managed and supported, Kevin Trenberth, a senior researcher at the U.S