The Nature Blog Network

Where do all the cool kids hang out?

The Nature Blog Network, apparently.  NBN hosts a directory of science/nature blogs sorted by category and traffic rank.   It's a great place to trawl for new reading fodder.

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For the first year on the job, a new underground coal miner wears a red-colored hardhat to signal to everyone on the crew that he (or she) is a rookie.  These so-called "red hats" receive 40 hours of safety training before they are allowed to take on any mining duties, onÂ