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Influenza viruses mutate rapidly, which is why flu vaccines have to be redesigned every year. A new study from MIT sheds light on just how these viruses evolve so quickly, and offers a potential way to slow them down.

NASA's Aqua satellite provided an infrared look at Hurricane Maria's cloud top temperatures and found the coldest cloud tops and strongest storms were facing east of the center and away from the U.S. However, Maria is a large hurricane. On Sept. 26, the National Hurricane Center reported that hurricane-force winds extend outward up to 105 miles (165 km) from the center and tropical-storm-force winds extend outward up to 240 miles (390 km).

Tropical Depression Pilar weakened to a remnant low pressure area as it continued to crawl north along the west coast of Mexico. Satellite data revealed no circulation center.

Certain marine species will fare much worse than others as they become more vulnerable to the effects of climate change, a new UBC study has found.

NASA's Aqua satellite peered into Hurricane Lee with infrared light to determine if the storm was intensifying. Infrared data showed cloud top temperatures were getting colder, indicating stronger storms.