The Silestone countertop I purchased is actually a composite of natural and man-made materials as opposed to granite which is strictly a natural stone product.
A greenhouse gas (GHG) is any gas in the atmosphere that absorbs and emits radiation in the thermal infrared range. These are the fundamental cause of the greenhouse effect, which results in increased temperatures on Earth. The greenhouse effect occurs as the gases reach Earthâs surface. As the short wave energy heats the surface, some of the longer wave energy radiates back into the atmosphere and back into space. Greenhouse gases absorb some of the energy and trap it in the lower atmosphere.
Global warming is a slow steady rise in Earth's surface temperature. Temperatures today are 0.74 Â°C (1.33 Â°F) higher than 150 years ago. Many scientists say that in the next 100â200 years, temperatures might be up to 6 degrees Celsius higher than they were before the effects of global warming were discovered. The basic cause seems to be a rise in atmospheric carbon dioxide, as predicted by Svante Arrhenius a hundred years ago.