The Ozone Layer if CFCs Hadn’t Been Banned
Image courtesy NASA
One of the greatest impediments to tackling far-reaching threats such as global climate change is our tendency to focus on the near-term costs of corrective action rather than the long-term costs of doing nothing.
At the root of...
Sep
15
The visualizations below present two cases, from several different viewing positions: the ‘world avoided’ case, where the rate of CFC emission into the atmosphere is assumed to be that of the period before regulation, and the ‘projected’ case, which assumes the current rate...
Sep
03
What if we injected a huge cloud of ash into the atmosphere to deflect sunlight and heat?
About David Keith
Sep
03
We’ve said this before, but few people truly know that the primary source of the air we all breathe comes from single celled organisms, largely phytoplankton and algae. These organisms use the sun’s energy to produce oxygen that collectively make up about 80% of the air we breathe.
The...
Apr
25
CU-Boulder study indicates a thick organic haze shrouding Earth several billion years ago was similar to the one now hovering over Saturn’s largest moon, Titan (above) and may have protected primordial life on the planet from damaging UV radiation. Image: NASA/JPL/Space Science Institute.
A new...
Jun
09
