Daily Archives: March 11, 2011

Your next bird book: The Crossley ID Guide (Eastern Birds)

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 was on the stoep. And in the package was my new The Crossley ID Guide: Eastern Birds! It was almost a Harry Potter moment.
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The Class-M Carbon Counter

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 when about one trillion tonnes of fossil carbon is released into the atmosphere by human activities, we will have reached a critical point, at which time we may have to leave the planet2.

We’re nearly half way there.

James Hrynyshyn at the blog Class: M has devised a sort of tricorder that keeps track of the carbon release count-down, and embedded it on the left sidebar of his blog. Go have a look.
Continue reading The Class-M Carbon Counter