When cars emit nitrogen oxides and volatile organic compounds in the summer, sunlight frequently mixes the two gases into a low-lying ozone smog that can choke people and kill plants. But apparently this photoreaction does not happen as often as scientists thought. They found that although the number of miles vehicles had traveled during the same period rose 60 percent, ozone concentrations showed a significant drop. Cook Out . . . Out Strange dishes are coming from Cornell University kitchens of late.
Scientists there are busy concocting recipes that can be easily prepared in space.
To do so, they are limiting themselves to only 15 to 30 crops for ingredients. Wheat and potatoes are the main staples, complemented with rice, soy, peanuts, salad crops and herbs. The group, headed by Angela M. Christiano, searched out this bit of DNA, dubbed hairless, by comparing a gene found in hairless mice with human chromosomes from individuals with a rare form of balding, called alopecia universalis. Hairless appears to trip a series of events that stimulates hair growth. In his annual address this past January, President Bill Clinton made an unprecedented number of comments about science.