Antacids' To Relieve Climate Change? Scientists Think So
To cool the planet without ozone damage, scientists aim to mimic the natural cooling effect that happens after a massive dispersion of sulfur dioxide into the air during a volcanic eruption. A giant antacid tablet for Earth may just do the trick, a new study suggests.
'Geoengineering' May Not Just Be A Sci-Fi Idea Anymore
Researchers from the Harvard John A. Paulson School of Engineering and Applied Sciences suggest that "geoengineering" - or using chemicals to slow down global warming - could tackle the Earth's growing climate change problem. This could be achieved by pumping an aerosol of calcium carbonate.
Frank Keutsch, co-author of the study said: "Instead of trying to minimise the reactivity of the aerosol, we wanted a material that is highly reactive but in a way that would avoid ozone destruction. Essentially, we ended up with an antacid for the stratosphere."
This study opens atmosphere-seeding options beyond sulfur dioxide, which has caused debates inside and outside of the scientific community. Researchers say that turning to a calcium compound that's among the most common on earth "could have significantly less environmental risk than sulfate aerosol."
Calcite Could Reverse Ozone Loss
This new study uses aerosols that are highly reactive and not hazardous to the ozone layer. Researchers discovered that calcite - a composition of limestone - could possibly reverse ozone loss, because it neutralizes emissions resulting from acids in the atmosphere while reflecting light and cooling the planet.
"Calcite is one of the most common compounds found in the earth's crust," said David Keith, first author and Harvard professor. "The amounts that would be used in a solar geoengineering application are small compared to what's found in surface dust."
More research is needed, though. Scientists claimed that these experiments could result in unanticipated aftermaths and that they still do not know the full effects of "geongineering".
Norway's Reindeer Are Shrinking Because Of Climate Change
Researchers on Monday warned that reindeer in the Arctic are shrinking due to climate change. According to reports, the average weight of reindeer in Svalbard in the Norwegian Arctic has dropped by 12 percent over the past 16 years.
Climate Change: Methane Levels In The Atmosphere Are Rising
Methane is more difficult to tackle than CO2, scientists say, and it also drives more potent greenhouse effect.
New Fuel Economy: How Trump’s New Fuel Policies Affect Car Owners and Gas Prices
President Trump's rules and regulations on fuel is set to impact the auto industry and its customers significantly.
Heat Waves And Pollution In Asia Worsen US Smog
According to new research, heat waves and air pollution in Asia have increased smog in the US. These can be deadly for vulnerable individuals with researches linking them to premature death from heart disease, stroke and lung ailments.
Global Warming Wrecks Havoc In Arctic's Wildlife
Global warming causes plants in the low Arctic of Greenland to bloom sooner than usual, while the emergence of others are delayed. Warmer winters cause spring to come sooner, triggering the changes in nature's clock, and wrecking havoc in its wildlife.
To Slow Down Global Warming, Scientists Propose To Refreeze Te Arctic Sea Ice
With the continuous efforts to eradicate global warming, can we still do something to at least slow down its inevitable adverse effects? What's the truth behind claims that scientists allegedly wanted to refreeze the Arctic sea ice caps to battle the ice melt? Is this the only solution? If so, how will they do it? Find out what experts have to say
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