Scientists warn a rise in temperature will reduce the habitable area in North America's mountains and cause a reduction in the number of mammal species.
Spacecraft Ulysses passed the largest planet in the solar system and picked up a rich haul of information before heading for the sun on its primary mission.
Scientists at the University of California, Irvine, have made the world's smallest battery -- about the size of the common-cold virus (Science, Vol 257 No 5074). Chemist Reginald Penner and his
Ever since the use of insecticides was reduced in favour of biological control, British gardeners are discovering that some pests are on the increase (Financial Times, Oct 31/Nov 1, 1992). Now, there
Specialised structures such as chromosomes were thought to float haphazardly in cells. Now, researchers believe tiny motors guide them on cytoplasmic tracks, a finding that could explain certain genetic disorders.
Certain mouse brain cells have been found to be capable of producing neurons. Scientists say if similar cells are found to exist in the human brain, it will soon be possible to treat nervous disorders.
DOCTORS in Africa are debating whether severely anaemic children should be given blood transfusions because of the risk of their getting AIDS-infected blood. Researchers, however, have found ways