The Arctic is a receptacle of the planet's air pollutants -- from forest fires to human-produced carbon dioxide emissions -- and a coordinated international effort is geared toward learning more about pollutants' effects at the top of the globe.

More than 1,000 people are reportedly dead after a cyclone hit the coast of Bangladesh Thursday night, leveling homes with 150 mph winds and powerful waves, according to the United News of Bangladesh and the Associated Press.