Global warming has become an inconvenient truth for the world's governments and some of its businesses. We the people must rise up and solve the crisis.
The Earth as seen from the moon. Photos taken during the Apollo 8 mission in December 1968 were the first to give humankind this perspective on its home planet. It's now an inconvenient truth that humanity's collective impact is threatening the other life forms that depend on the planet.
Photo by Fotolia/Mopic
The Basics of Global Warming: Normally (the left image), some of the sun's energy re-radiates back into space and some is trapped by the Earth's atmosphere, which keeps our temperatures within stable bounds. As human-generated greenhouse gases enter the atmosphere (the right image), it traps more infrared radiation. As a result, the temperature of the Earth rises. And is doing so to dangerous levels.
The relationship between CO2 and temperature is complicated, but the most important point is this: When there’s more CO2 in the atmosphere, the temperature increases.
About 10,000 years ago, when the North American glaciers melted and rushed into the North Atlantic, the Gulf Stream shut down and Europe quickly went back into an ice age. Scientists worry the same result may reoccur in the near future because of accelerating melting in Greenland.
MOTHER EARTH NEWS Staff
It took more than 10,000 generations for the human population to reach 2 billion. Then it began to rocket upward to 9 billion in the course of a single lifetime: ours. We have a moral obligation to take this dramatic change into account in terms of the relationship between our species and the planet.
Over the last century, the effects of climate change on precipitation have not been uniform. The blue dots mark the areas with increases, the orange areas with decreases. Sometimes the effects of such a large shift can be devastating.