Millions across 10 US states bracing for severe thunderstorms, flooding and tornadoes
More than 17 million people from eastern Texas to the lower Mississippi Valley are facing severe thunderstorms and possible tornadoes. Dallas, Texas has already faced flooding.
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Researchers share detailed air quality data as questions linger over toxic chemicals
Researchers contributing to the ASCENT network of air quality sensors observed spikes in lead and chlorine downwind from the ...
American Airlines flight collides with Army helicopter near Reagan National, more than 30 bodies recovered
A small commercial airliner and a military helicopter collided and crashed into the Potomac River near Reagan National ...