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Engineers Rescue Aging Satellites, Saving Millions

Researchers have used a new technique to save $60 million for broadcasters by extending the service life of two communications satellites. The technique works by applying an advanced simulation and a method that equalizes the amount of propellant in a series of fuel tanks so that the satellite consumes all of the fuel before being retired from service.

Air Quality In Airplanes: Blame Ozone And Natural Oils On Skin

Airline passengers and crews who gripe about poor cabin air quality could have a new culprit to blame: the oils on their skin, hair and clothing. A new study suggests interactions between body oils and ozone found in airplane cabins could lead to the formation of chemical byproducts that might worsen nasal irritation, headaches, dry eyes and lips, and other common air traveler complaints.

Airplane Monitors Great Lakes Algae

A rare bird has been flying over the Great Lakes recently, and it isn't migrating or searching for prey. This hawkeyed species is a Learjet aircraft outfitted with an advanced imaging system. Engineers modified the plane to monitor algae in western Lake Erie and Lake Huron's Saginaw Bay. Most algae are harmless and even important to the health of the ecosystem. But when algae grow rapidly enough to form blooms that float on the water or wash ashore, they can be a nuisance.