Carbon dioxide is the most abundant additive greenhouse gas contributing to global warming. It is the fourth most abundant component of dry air and levels in our atmosphere have thus risen about 40% since the onset of human industrialization, and are expected to play a troubling role in raising global temperature. Atmospheric carbon dioxide concentrations have varied substantially in the pre-human history of our planet, and have had profound impacts on global temperatures in the past.
what would most likely happen if the Federal Communications Commission lifted all restrictions on the use of obscenities over radio and television stations. Congress would override the decision and reimpose restrictions on obscenity.
