geoengineering

COP29 could make carbon markets permanent. Indigenous leaders are calling for a moratorium before it's too late.

The proposal focuses on a technique that fills the atmosphere with particles, reflecting part of the sun’s heat and light into space.

Researchers at the National Oceanic and Atmospheric Administration and NASA figure if they can just inject ice high up in the air, water vapour in the upper atmosphere would get a bit drier and that could counteract a small amount of the human-caused heating.

Techniques such as solar radiation management may have unintended consequences, experts say

Spraying aerosols and sucking carbon out of the air would bring down temperatures, yes. But the unintended consequences of geoengineering could be enormous.

Countries must urgently agree to a way of controlling and regulating attempts to geoengineer the climate, the former head of the World Trade Organization says.

Someone's bound to hack the atmosphere to cool the planet. So we urgently need more research on the consequences, says climate scientist Kate Ricke.

Policies are urgently needed to reduce greenhouse gases by at least seven per cent each year from now to 2030 and beyond, writes Ralph Martin.

Swedish environmental groups warn test flight could be first step towards the adoption of a potentially “dangerous, unpredictable, and unmanageable” technology

A lack of diversity among scientists may skew how the public perceives the idea of hacking the climate.

In mid-December, more than 28,000 people met in Washington, D.C. to discuss everything earth science-related at the American Geophysical Union Fall Meeting. But amid the dry data and scientific acronyms at a session on solar geoengineering, the science had a patina of existentialist dread that you might not see in a similar forum.

It sounds like spinning straw into gold: suck carbon dioxide from the air where it's contributing to climate change and turn it into fuel for cars, trucks and jets.

Next month, a Silicon Valley engineer plans to head out on a snowmobile from Barrow, on the northern tip of Alaska, to sprinkle reflective sand on a frozen lake to try to stop it from melting.

Husky has now admitted that "ground movement" is to blame for its disastrous pipeline spill. That may sound out of Husky's control, but could the spill still have been prevented?