Word: nitrogen
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...stressed that life needs four elements to evolve: hydrogen, oxygen, nitrogen, and carbon...
...Environmental Quality Engineering (DEQE) will be deciding sometime this month. Do you okay Harvard's Medical Area Total Energy Plant (MATEP), which has already cost the University $302 million--six times more than originally projected? Or do you decide that the risk of four people suffering lung cancer from nitrogen dioxide emissions is too great and therefore prevent the site from generating electricity? To put it more bluntly: are those hypothetical lives really worth $75 million apiece...
MATEP currently produces steam and air conditioning for the hospitals and electricity for the Brigham and Women's Hospital. It has only one more hurdle to cross before starting up the diesels. On August 24, a hearing officer appointed to make a recommendation to the DEQE ruled that although nitrogen dioxide emission from MATEP could potentially cause as many as four lung cancer deaths over the plant's 40-year operating life, that's not an "unreasonable" risk. In fact, according to hearing officer Ellyn R. Weiss, a Washington, D.C., environmental lawyer who has handled the MATEP case since...
Second and third attempts will become easier and less costly with the wider use of cryopreservation, a process in which unused embryos are frozen in liquid nitrogen. The embryos can be thawed and then transferred to the woman's uterus, eliminating the need to repeat egg retrieval and fertilization. Some 30% to 50% of embryos do not survive the deep freeze. Those that do may actually have a better chance of successful implantation than do newly fertilized embryos. This is because the recipient has not been given hormones to stimulate ovulation, a treatment that may actually interfere with implantation...
Most of the phosphorus, biologists have found, comes from factories and municipal sewage-treatment plants. The nitrogen apparently enters the Chesapeake from farm fields and construction sites, which send fertilizers and soil into rivers and, ultimately, into the bay. Most of this nitrogen comes into the Chesapeake from the Susquehanna River. Flowing across Pennsylvania's rich farm country, the Susquehanna provides the bay with more than 40% of its fresh water and up to three-quarters of its nutrients...