Although CFCs and related chemicals are being phased out because they damage
the ozone layer, it has been difficult to find a replacement for them in car air
conditioning. Daimler-Benz of Germany is now testing an air conditioner that
uses compressed carbon dioxide instead. The gas was used in early refrigerators,
but abandoned since it needs very high pressure. With modern materials, this is
no longer a problem, says Daimler-Benz.
More from 51¶¯Âþ
Explore the latest news, articles and features
Popular articles
Trending 51¶¯Âþ articles
1
The Selfish Gene at 50: Why Dawkins’s evolution classic still holds up
2
Mathematicians stunned by AI's biggest breakthrough in mathematics yet
3
Photos reveal unexpected details from the world's first atomic test
4
Mystery of the ancient giant stone jars of Laos may have been solved
5
The ‘doomsday’ glacier’s giant ice shelf is about to break away
6
How I used psychology to come back from the worst year of my life
7
We may finally know why dinosaurs like T. rex evolved tiny arms
8
The distant world that is our best hope of finding alien life
9
Epic dreaming is leaving people exhausted and distressed
10
Putting CO2 into rocks and getting hydrogen out is climate double win
