A study suggests solar geoengineering could work most effectively by trying to blunt half of expected global warming, rather than all of it.
Why it matters: Government policies to cut carbon emissions aren't on target to keep warming below dangerous levels, so geoengineering may eventually be necessary. By aiming for a more modest offset of the warming to come, researchers may be able to maximize the benefits while minimizing the risks.
Why it matters: The temperate spring would follow an abnormally mild winter, ranked the sixth-warmest on record, and playing a hand in spring's early start, The Washington Post reports.
