Earthquake sensors are giving scientists a new way to track space junk as it falls back to Earth.
Editor's note: Follow USA TODAY's updates about Hurricane Erin for Wednesday, Aug. 20. Hurricane Erin has weakened slightly into a Category 2 hurricane but is forecast to "substantially grow in size" ...
Editor's note: Follow USA TODAY's updates about Hurricane Kiko for Thursday, Sept. 4. Two hurricanes are spinning in the Pacific Ocean, with Hurricane Kiko more than 1,500 miles east of Hawaii and ...
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