Science gets to the bottom of mysteries like widely reported "earthquake lights" and the true age of the cockroach in today's green news.
1. While people for millenia have reported seeing mysterious lights immediately before earthquakes, scientists think they've found the answer in a unique reaction by stressed rocks. (National Geographic)
2. Researchers in northwest Colorado recently discovered 49-million-year-old fossilized cockroaches, pushing back the bug's known Earth record by a full 5 million years. (Live Science)
3. California's lack of snowfallthis winter hurts more than avid skiers; it means people and nature in the state will have a lot less freshwater at their disposal. (Grist)
4. Windpower in the UK generated a record 10% of the country's electricity in December, enough for 5.7 million homes during one of the most energy-intensive times of the year. (TreeHugger) More
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