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Earth's oldest asteroid strike may have ended 'Snowball Earth'

6 years 8 months ago
Researchers have discovered the Earth's oldest asteroid impact crater, a 2.2 billion-year-old strike found in Western Australia. The space rock may have also ended a massive ice age that radically altered the planet's climate, known as "Snowball Earth."
Chris Ciaccia

UFOs may be piloted by time-traveling humans, book argues

6 years 8 months ago
Unidentified flying objects (UFOs) have captured the public's attention over the decades. As exoplanet detection is on the rise, why not consider that star-hopping visitors from afar might be buzzing through our friendly skies by taking an interstellar off-ramp to Earth?
Leonard David

Thunberg slams Davos elites on climate as Trump takes stage

6 years 8 months ago
DAVOS, Switzerland (AP) — Young climate activists including Swedish teenager Greta Thunberg told business and political elites gathered Tuesday at the World Economic Forum that they aren't doing enough to tackle the climate emergency and warned them that time was running out.

Scientists want to turn moondust into oxygen

6 years 8 months ago
NASA's plan is to return astronauts to the Moon by 2024, but the European Space Agency is working on a plan to help humans breathe on the celestial satellite — by turning moondust into oxygen.
Chris Ciaccia
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19 minutes 17 seconds ago
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