Author Archive

A Wild Start for Weather in the New Year

National Geographic: Here we go again. The weather's going to extremes: a snowstorm in Jerusalem, wildfires in Australia, a cold snap in China, a heat wave in Brazil. Based on the first two weeks of the new year, 2013's picking up right where 2012 left off. (What's up with the weather? Read the September 2012 National Geographic story and see a gallery of extreme weather pictures.) As much as 8 inches (20 centimeters) of snow fell on Jerusalem (map) last Thursday, closing roads across the city. It was the biggest...

What’s Causing Extreme Weather?

National Geographic: and 2011 that routed storms away from drought-prone parts of North America, and a massive high pressure system, known as a heat ridge, that parked itself over the U.S. this summer and refused to budge. But there's more to the story, said John Nielsen-Gammon, state climatologist in Texas, which just went through the worst one-year drought in its history. It wasn't just bad luck that caused these disasters, he explained. Human-induced global warming was also to blame. (Test your global warming...