Studying Antarctica’s Ice From the Side of a Helicopter
The fastest way into the gaps between gigantic blocks of a broken-up glacier is by lowering instruments from above, through the door of a...
Nuclear Arms Control Era Comes to End Amid Global Rush for New Weapons
Beijing, Moscow and shaken American allies are seeking new warheads as President Trump ends more than a half century of nuclear arms control with...
Climate ‘Superfund’ Bills Spread Nationwide, Despite Legal Battles
The laws aim to force oil companies to help pay for damage from global warming. Industry is gearing up for state-by-state battles.The laws aim...
Federal Vaccine Advisers Take Aim at Covid Shots
One panelist accused the F.D.A. of withholding data on potential harms. The advisers also are reviewing research on vaccines given to pregnant women.One panelist...
Rebuilding the Lighthouse of Alexandria, Block by Virtual Block
An ancient skyscraper considered the seventh wonder of the world crumbled to ruin centuries ago. Now an ambitious archaeological project aims to reassemble it...
