Since reducing greenhouse gas emissions will not be enough to counter the effect of global warming, researchers at Harvard have been looking at a way to geoengineer a solution by injecting ozone-repairing light-reflecting aerosols in the stratosphere.
In order to keep aerosols from harming the ozone, the particles would need to neutralize sulfuric, nitric, and hydrochloric acid on their surface. To find such a particle, Keutsch turned to his handy periodic table. After eliminating the toxic elements, the finicky and rare metals, the team was left with the alkali and alkaline Earth metals, which included sodium and calcium carbonate.
“Essentially, we ended up with an antacid for the stratosphere,” said Keutsch.
Through extensive modeling of stratospheric chemistry, the team found that calcite, a constituent of limestone, could counter ozone loss by neutralizing emissions-borne acids in the atmosphere, while also reflecting light and cooling the planet.
|A Room Full of Hipsters That Rotates|
|“It’s not something you would expect to see there and not something we’ve seen there before.”|
|"Ta’u is not a postcard from the future, it’s a snapshot of what is possible right now."|
|The End of Fossil Fuels|
|There Are Plastic Islands in the Pacific Ocean You Can Walk On|
|“Eliminating the time needed to stop and re-charge a conventional electric car’s battery.”|
|“Nobody is forcing the participants to stay, of course, but if they leave, they won’t be paid.”|
|“That science fiction future where robots can do what people and animals do may be closer than you think.”|
|Making a Movie Inside a Video Game|
|“This 160-step biochemical process is very well studied, and surprisingly inefficient.”|
|Google Map Shows You the Most Photographed Areas of the World|
|“During this phase of decline, the US was likely to go through a phase of reactionary 'fascism'.”|
|“We’re going to start to see chip implants get the same realm of acceptance as piercings and tattoos.”|
|“The shift from fuel and pistons to batteries and electric motors is unlikely to take that long.”|
|“Our Internet handlers, not government, are using operant conditioning to modify our behaviour today.”|
|“Within 30 years, half of humanity won't have a job. It could get ugly — there could be a revolution.”|
|“After 78 years, the helicopter has been reinvented.”|