Category Archives: Global Warming

Global Warming Global warming is an increase in the average temperature of Earth’s surface. Since the late 1800’s, the global average temperature has increased about 0.7 to 1.4 degrees F (0.4 to 0.8 degrees C). Many experts estimate that the … Continue reading →

The greenhouse effect is the primary determinant of Earth’s average temperature and therefore of climate. But there are lesser, but still significant factors; The Sun’s brightness varies enough to effect climate. The Sun’s 11 and 22 year sunspot cycle is … Continue reading →

The greenhouse effect The atmosphere has a natural supply of “greenhouse gases.” They capture heat and keep the surface of the Earth warm enough for us to live on. Without the greenhouse effect, the planet would be an uninhabitable, frozen … Continue reading →