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Is San Francisco on the verge of a herd immunity breakthrough? Experts are optimistic
The city kept case numbers low, and it has one of the highest vaccination rates of any major U.S. city. Now comes the real test.
China’s emissions exceed those of U.S. and developed countries combined, report says
The findings come after a climate summit during which Chinese President Xi Jinping reiterated his pledge to make sure the nation’s emissions peak by 2030.
Jeff Bezos' Blue Origin is auctioning off a seat on its first space tourism flight
The first flight of the company's New Shepard rocket and capsule will take place July 20 and one seat will be auctioned off to the highest bidder.
SpaceX launches and lands Starship in first successful flight
The previous four test flights ended in fiery explosions. Success came on the 60th anniversary of the flight of first American in space, Alan Shepard.
Mysterious structures in Saudi Arabia thousands of years older than Stonehenge, pyramids
Researchers think the region’s "mustatils" form the oldest ritual landscape in the world. But exactly what they were for isn’t clear.
King Henry VIII's ship reveals racially diverse Tudor England
"For us it reinforces this idea that England was a much more diverse society," said Dr. Alexzandra Hildred of the Mary Rose Trust.
Climate pledges see world closing on Paris goal, researchers say
The Climate Action Tracker, compiled by a group of researchers, projects that the world is currently set to overshoot the Paris accord’s target by 0.9 degrees.
How long is the solar system's longest day? Venus has the answer
Venus has received less scientific attention than Mars, but scientists say it offers a wealth of information about planet formation.
Biden admin’s first climate pollution rule takes aim at refrigerants
Hydrofluorocarbons, used frequently in air conditioners and refrigerators, are greenhouse gases that trap heat — and do so far more than other gases such as carbon dioxide and methane.
Latin America looks to space, despite limitations on ground
Satellite technology, international partnerships, national pride and local development all beckon.
CVS, Walgreens have wasted more vaccine doses than most states combined
Months into the vaccination drive, the CDC has a limited view of how much vaccine is going to waste.
Fifty years later: Earth Day has descended into GOP-driven chaos, experts warn
Changing global and political landscapes have made the kind of broad and bipartisan agreements reached in the 1970s seem impossible.