Fall 2010
Too much of a good thing
Science has been predicting and measuring our warming planet for more than a century now. But it was only in the last two decades that most Americans came to believe the earth’s temperature was indeed rising and that the main culprit is the growing amount of carbon dioxide in our atmosphere.
Now scientists are giving a lot of thought to another culprit: nitrogen. Like carbon dioxide, it’s seemingly benign—colorless, odorless, tasteless, and a foundation of life on our planet. Left alone, it tightly binds to itself in inert, two-atom molecules, or N2. It’s ridiculously commonplace, making up four-fifths of our atmosphere. It’s also a modern … » More …