Archives for March 11, 2011
Your next bird book: The Crossley ID Guide (Eastern Birds)
Posted by Greg Laden on March 11, 2011
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Three days ago I happen to glance out the front window of our townhouse and found myself staring at a bald eagle swooping by, presumably after picking up one of the neighborhood dogs or small children1 A few minutes later, the doorbell rang. When I opened the door, no one was there but a package…
The Class-M Carbon Counter
Posted by Greg Laden on March 11, 2011 A planet is considered “Class M” if it can sustain human life1. We live on a Class M planet. However, the conditions that make a planet conducive to life may change over time, so it is important to have instrumentation and gauges and stuff that will keep track of important variables. It is estimated that…
, which is now available for the 
