SCIENCE

Scientists have a new idea for how Earth got its oxygen: It’s because the planet slowed down and days got longer.

A study published Monday proposes… Read more

The same hot weather that brings out the best in tomatoes, cucumbers, peppers, and other summer vegetables makes spinach, lettuce, peas, and other… Read more

PORTLAND, Ore. — Firefighters scrambled on Friday to control a raging inferno in southeastern Oregon that’s spreading miles a day in windy conditions,… Read more

WASHINGTON  — U.S. Treasury Secretary Janet Yellen says she will lead an effort by top U.S. regulators to assess the potential risk that climate change… Read more

Virgin Galactic will become the first rocket company to launch the boss when Richard Branson straps into one of his sleek, shiny space planes this… Read more

SAVANNAH, Ga. — Severe weather from Tropical Storm Elsa spurred tornado warnings in Delaware and New Jersey early Friday as the system moved over the… Read more

The deadly heat wave that roasted the Pacific Northwest and western Canada was virtually impossible without human-caused climate change that added… Read more

BEIJING — Two astronauts made the first space walk on Sunday outside China’s new orbital station to work on setting up a 15-meter (50-foot) long robotic… Read more