[[Environmentalist]]s predict catastrophic [[global warming]] scenarios at the hands of excessive CO<sub>2</sub> released by industrial and commercial activities. The theory arguing against the greenhouse effect is that, the planet naturally gives off carbon dioxide, from natural sources such as volcanoes, and thus, it is not so bad for the Earth. | [[Environmentalist]]s predict catastrophic [[global warming]] scenarios at the hands of excessive CO<sub>2</sub> released by industrial and commercial activities. The theory arguing against the greenhouse effect is that, the planet naturally gives off carbon dioxide, from natural sources such as volcanoes, and thus, it is not so bad for the Earth. |