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Climate change is skewing economic data — and the stakes are high for economists to get it right
Vikings were in North America in 1021, well before Columbus, researchers say
U.S. surgeons successfully test pig kidney transplant in human patient
Fossil fuel plans would far overshoot climate goals, study finds
After lecture is canceled, free speech debate roils science academia
Diver finds 900-year-old sword thought to belong to Crusader knight
Choosing 'junk' over facts, Miami school forces vaccinated students to stay home for 30 days
Australia starts chlamydia vaccine trial in koalas
A planet 6,000 light years from Earth reveals how the end of our solar system will look
NASA's asteroid hunter Lucy soars into sky with diamonds
Chinese crew docks at new space station for historic mission
Changing global and political landscapes have made the kind of broad and bipartisan agreements reached in the 1970s seem impossible.