Scientists turn carbon dioxide into stone

Q.  Scientists have turned which pollutant gas into stone to avert global warming?
- Published on 13 Jun 16

a. NO2
b. CO
c. CO2
d. SO2

ANSWER: CO2
 
Scientists have turned carbon dioxide into stone in a matter of months by pumping it deep underground, offering a revolutionary new way of storing the greenhouse gas to tackle climate change.
  • The pioneering experiment in Iceland mixed CO2 emissions with water and pumped it hundreds of meters (feet) underground into volcanic basalt rock — where it rapidly turned into a solid.
  • Carbon dioxide is a key factor in global warming
  • CarbFix project at Iceland's Hellisheidi plant — the world's largest geothermal facility, which powers Reykjavik — sought to solidify the CO2 and succeeded in doing so.

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