Oliver Morton, author of Mapping Mars and Eating the Sun and features editor for the journal Nature, has a brilliant piece about our extraordinary little orb, where it fits in the history of the universe, and how to draw a line between the durability of life here and global warming. Very few authors are capable of this kind of range, this manner of huge thinking, and this unusual insight. Read his NY Times op-ed, "Not-so-lonely planet," and you'll feel much better about everything.