Word: oxygenate
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...five aborted engine tests so far have been due to fueling problems, specifically in lines that carry liquid hydrogen from ground equipment to the tank. After two of the failures, several hours were required to unload more than half a million gallons of liquid hydrogen and oxygen from Discovery's tanks before technicians could examine problems. NASA engineers are not certain exactly what caused last week's problem. Said Joseph Lombardo, who oversees the shuttle's main-engine project at Marshall Space Flight Center in Alabama: "We don't know whether it was a faulty indication or really a malfunction...
Harris said that immediately after the shutdown, the launch team remotely began to make the vehicle safe as it sat on the pad, its tank loaded with 385,000 gallons of liquid hydrogen and 143,000 gallons of liquid oxygen...
Suffocating and sometimes poisonous blooms of algae -- the so-called red and brown tides -- regularly blot the nation's coastal bays and gulfs, leaving behind a trail of dying fish and contaminated mollusks and crustaceans. Patches of water that have been almost totally depleted of oxygen, known as dead zones, are proliferating. As many as 1 million fluke and flounder were killed earlier this summer when they became trapped in anoxic water in New Jersey's Raritan Bay. Another huge dead zone, 300 miles long and ten miles wide, is adrift in the Gulf of Mexico...
...triggered, for example, by extended periods of sunny weather following heavy rains. Scientists believe algal growth is speeded up by the runoff of agricultural fertilizers. The burgeoning algae form a dense layer of vegetation that displaces other plants. As the algae die and decay, they sap enormous amounts of oxygen from the water, asphyxiating fish and other organisms...
...break down hydrocarbons than scientists thought. But there may be a limit to how much damage a sector of ocean can take. Under assault by heavy concentrations of sludge, for example, the self- cleansing system can be overwhelmed. Just like decaying algae, decomposing sludge robs the water of oxygen, suffocating many forms of marine life. What effect chronic contamination from sludge and other wastes will have on the oceans' restorative powers is still unknown...