Word: nuclei
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...halt, the universe is destined to collapse, ultimately dissolving into a fireball--a Big Crunch that amounts to the Big Bang run in reverse. If it's not, and expansion wins out, then the universe will eventually grow unpleasantly dark and cold. Stars produce energy by fusing light atomic nuclei, mainly hydrogen and helium, into heavier ones. When the hydrogen and helium run low, old stars will sputter out without any new ones to take their place, and the universe will gradually fade to black. Such were the gloomy alternatives that Robert Frost wrote about after being briefed...
...damaged was part of Harvard's Nuclear Magnetic Resonance laboratory, which allow synthetic chemists to observe the behavior of nuclei within molecules. The lab is currently closed and expected to be re-open within a few days, according to Shaw Huang, managing director of the laboratory...
Among the consequences of this law is that if the nucleus of a uranium atom fissions (splits) into two nuclei with slightly less total mass, a tremendous amount of energy is released. In 1939, with World War II looming, a group of scientists who realized the implications of this persuaded Einstein to overcome his pacifist scruples and write a letter to President Roosevelt urging the U.S. to start a program of nuclear research. This led to the Manhattan Project and the atom bomb that exploded over Hiroshima in 1945. Some people blame the atom bomb on Einstein because he discovered...
...heart disease may seem complicated and confusing, but it's a breeze compared with trying to design an anticancer diet. Cardiovascular disease is relatively simple; it's the result of normal bodily processes taken to the extreme. Cancer, by contrast, involves changes in the programming of DNA within the nuclei of individual cells. Beyond that, heart disease is an illness that affects a single organ system, while cancer is dozens of different diseases that target body parts as radically different as the brain, breast and bone...
...cells that are in the process of dividing--the doctors outfitted it with a gene from the herpes virus and injected it into the brain. Because virtually the only cells that divide in the brain are tumor cells, the retroviruses infected them alone, inserting the herpes gene into their nuclei. As this gene expressed itself, it made the tumor cells sensitive to the herpes drug ganciclovir. When the drug was then administered to the patient, says Anderson, it "made the tumor cells commit suicide." But here there were troublesome side effects...