According to the IAEA's scale, the Fukushima crisis in Japan is now a 7, the most severe rating and equal with Chernobyl. But experts say the scale is deeply flawed.
The 'snowball express' blizzard of 2010 led to lots of public nail-biting and even the postponement of a pro football game. Perceptions about global warming have helped make Americans forget that, sometimes, winters bring a lot of snow, an expert suggests.
Scientists have created an artificial genome and inserted it into a bacteria cell, creating the first synthetic life. The goal of the project is to design microbes for energy or health applications.