Sightings of the aurora borealis are unlikely in the U.K. this weekend, but the northern lights could return on Monday, forecasters said.
Citing rapid advances by China and Russia, the United States is building an extensive capacity to fight battles in space.
Scientists say storms like those that battered Houston could become more intense as the planet warms, though pinning down trends is still challenging.
A review of a limited number of cases of unresponsive patients with severe traumatic brain injuries raised questions about a custom of making a decision within 72 hours.
Videos filmed by divers show that choking, blinding and sacrificing limbs are all in the cephalopods’ repertoire.
The treatment is for patients with small cell lung cancer, which afflicts about 35,000 people in the U.S. a year.
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