Word: nitrogen
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Dates: during 1990-1999
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Husband and wives who have been through in-vitro fertilization with some embryos left over have had to wrestle with the fact that they have a potential human being stored on ice. There are already 10,000 frozen embryos floating around in liquid-nitrogen baths in the U.S., stuck in a kind of icy limbo as their would-be parents sort out the options. Do they let the embryos thaw out and die? Do they give them away? Do they have the right to sell embryos to the highest bidder? And who gets custody -- or the cash -- in a divorce...
Harvard chemists have come up with a substance that in theory should be harder than diamond, considered the hardest substance on earth. The new synthetic material is a blend of carbon and nitrogen (diamond is all carbon), and if the researchers can make a chunk big enough and pure enough to test, they'll be able to see whether the theory is correct...
According to Finlayson-Pitts, organic molecules such as hydrocarbons participate in a string of reactions involving hydroxide (OH) to eventually form nitrogen dioxide and ozone...
...only ozone-creating molecule generated by humans is nitric oxide, but the molecule must be first converted to nitrogen dioxide before it can form ozone...
...actually harmless, Zapol said. The researcher said the Environmental Protection Agency assured him that while nitrogen oxide's "daughter product," nitrogen dioxide, also present in pollutants, is poisonous, nitric oxide itself is not dangerous...