Spraying aerosols and sucking carbon out of the air would bring down temperatures, yes. But the unintended consequences of geoengineering could be enormous.
The economics are clear: Renewables are cheap enough for the country to rapidly decarbonize. Less evident is the political will to pull it off.
Photons wander through snow like ants through a nest. That inspired a clever new NASA technique for measuring the fluffy stuff from orbit.
Rumbles and tides create tiny, detectable disturbances in fiber optics. The world’s cables could form a vast network for detecting earthquakes and tsunamis.
Scientists have discovered “proto-peat” forming in the Arctic as the Earth naturally sequesters carbon, but it could take centuries to mature.
The technique uses plants as fuel and sequesters the emitted CO2, removing it from the atmosphere. But scaling up would use gobs of water and land.
Researchers have struggled to quantify in real time how much carbon dioxide humans spout. Lockdowns presented a unique opportunity to get a clearer picture.
You can tell a lot about a tree by its sway, so scientists are outfitting them with accelerometers. That could help the West better manage its water.
The “urban heat island effect” creates extra-hot temperatures that kill. But cities can prescribe powerful treatments, like green spaces and reflective roofs.