Chlorofluorocarbon

While we have yet to identify life on any other planet or anywhere else in space, a new study has revealed the telltale signs which could indicate a planet being inhabited.

With air conditioner demand surging, scientists are looking for ways to improve the energy efficiency of cooling systems and limit damaging emissions that accelerate global warming.

Innovation is focused on three major fronts, with much of the attention on energy consumption. Air conditioning units account for 6 percent of electricity used in the United States.

However, according to Canadian researcher Ching-Bin Lu, it has been around since the 1980s. It is estimated that the hole has existed since the eighties, but only now has its large size been realized.

The chief source of new problems is solutions to old problems. The ammonia that we used in domestic fridges as a coolant in the early-20th century was poisonous if it leaked, so in the 1930s we replaced it with chlorofluorocarbons (CFCs), which you can breathe all day without harm. Problem solved.

BELGRADE - Serbia is doing everything it can to enact new regulations that will limit the use of materials that damage the ozone layer, Serbia's Minister of Agriculture and Environment Protection Snezana Bogosavljevic-Boskovic said on September 16, the International Day for the Preservation of the Ozone Layer.

Earth’s protective ozone layer is beginning to recover, largely because of the phase-out since the 1980s of certain chemicals used in refrigerants and aerosol cans, a U.N. scientific panel reported Sept. 10 in a rare piece of good news about the health of the planet.