Word: nitrogenating
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Dates: during 2000-2009
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Packed in vials and frozen in liquid nitrogen, the embryos will be hand-delivered from Boston IVF, a local fertility clinic, according to the facility’s scientific and laboratory director R. Douglas Powers...
...cannon which could fire a hundred kilometers and his travels to exotic locales like Egypt, Russia and Japan helped propel him to the forefront of European science at the end of the Edwardian age. In his spare time, he even found a financially viable procedure to extract nitrogen from the air for use in fertilizer. He eventually presented a theory—proven years after his lonely death—that the origin of the beautiful waves of the borealis were rooted in the Earth’s electromagnetic field and the energy from similar phenomena...
Vitousek is currently focusing on the problem of global nitrogen, the element that makes up 80% of the atmosphere. Nitrogen is also found in fossil-fuel exhaust and is a principal ingredient in fertilizer. Spread too much of it around, and it can throw off the planet's biological balance, triggering explosive growth in some species and suffocating others. "That's a huge alteration in how the world works," Vitousek says. "Our capacity to change the earth means we must manage this." For a man who didn't even much care for science at first, that's quite a mission...
...environment, one based on oxygen and the other on sulfide. During most of the Proterozoic, it turns out, only the shallows were infused with oxygen. The deep oceans, by contrast, were inordinately rich in sulfides, which indirectly interfere with the ability of algae to make use of growth-promoting nitrogen...
...caveats, in such a privileged spot in the report, essentially encourage regulators to take energy concerns into account when attempting to save the environment from our nation's prodigious energy consumption. That said, the group does encourage the president to pursue three-pollutant legislation, to limit the sulfur dioxide, nitrogen oxide and mercury output of electricity generators...