Geoengineering

A technique originally developed to combat acid rain has the potential to pull an enormous amount of carbon dioxide out of the atmosphere – while helping to deacidify oceans, restore rivers and boost biodiversity and fish populations.

New research suggests that cooling the poles by 2 °C, and re-freezing the Arctic and Antarctic, is "feasible at relatively low cost with conventional technologies," if humanity agrees that a rising sea level is worse than this plan's side effects.

A new study from MIT looks at the consequences of solar geoengineering, exploring some of the flow-on effects of such a move and finding that it could weaken storms, destabilize ice sheets and lead to more polluted urban areas.

A new study has shown how the world’s shipping is inadvertently serving up a live experiment, quantifying how the clouds modified by pollution they create can block solar energy, and measuring the effect this could be having on global temperatures.

Putting aside the issues of should we or shouldn't we, or the prospects for success or failure, would spraying aerosols into the atmosphere in an attempt to combat climate change even be practically achievable? A new study says yes.

With the once controversial idea of battling climate change through geoenginnering slowly gaining popularity, new research from the University of Exeter offers evidence that this untested approach could result in climate chaos.

​Geoengineering suggests we might be able to slow the effects of climate change by messing with the atmosphere. Two studies have examined the idea, one running computer simulations of techniques, while the other outlined a small-scale test to figure out how practical and safe the idea might be.

Harvard geoengineering researchers have discovered a new kind of aerosol they say could be safely introduced into the atmosphere to bounce heat back out into space, and help repair the ozone layer while it's at it.

Cloud-seeding scientists may soon have a new tool at their disposal, with researchers in the US successfully testing a cloud-seeding drone aimed at offering a cheaper and safer alternative to current methods.

According to new research, solar geoengineering efforts that would place small particles into the upper atmosphere to reflect some sunlight back into space could result in whiter, brighter skies.

A new study examining the effects of sunshade geoengineering has concluded that such an approach would be more likely to improve food security than threaten it.

US scientists propose that artificially introducing aerosols to the atmosphere will brighten clouds and increase reflectivity which could help defend the Earth from global warming.