Wiping out all of Africa’s elephants could accelerate Earth’s climate crisis by allowing 7% more damaging greenhouse gases into the atmosphere, scientists say. But conserving forest elephants may reverse the trend, providing a service worth $43billion in storing carbon, the academics found. The research, published in Nature Geoscience, shows that …
SALINE and degraded soils, inadequate water, poor quality seeds and the lack of means to own land -- these are the main problems that Indian peasant women face. And this conclusion was arrived at not by agrarian economists or bureaucrats, but by peasant women from the villages of north India. …
The full moon is said to drive people loony. Now, a scientist says the sun makes them murderous. V S Venkatavardhan, director of the Nehru Planetarium in Bombay, asserts major disturbances on earth occur during solar flares, which are increased eruptions of nuclear protons, electron particles and gamma rays oii …
PARTICLE physicists at Fermilab near Chicago may have sighted the elusive "top" quark, one of the smallest constituents of matter (Science, Vol 258, No 5086; New Scientist, Vol 136, No 1851). An experiment at the Tevatron collider -a large particle smasher -yielded a pattern of particle debris that was anticipated …
BUCKYBALLS or fullerenes, a newly discovered form of carbon, have opened up a new field in carbon chemistry and new applications are coming to light in electronics and electrochemistry. Japanese scientists have recently made thin films of fullerene crystals that show the electrical behaviour of semi-conductors such as silicon. Other …
FOR NEARLY two decades, scientist bureaucrat M G K Menon has been envied and hated by jealous rivals for the favours he has enjoyed from successive Indian governments, whatever the ruling party. Following close association with Indira Gandhi as well as her son, Rajiv, during their premierships, Menon joined the …
IN A MAJOR breakthrough, neurobiologists at the Stanford University in USA, led by Jack McMahan, confirmed the protein agrin plays a vital role in communications within the nervous system. The protein, which comprises more than 1,900 amino acids, is released by nerve cells. It helps trigger the establishment of the …
THE CAMPAIGN by astronomers to stop artificial light in cities from affecting stellar views, which prevents them studying stars, is gaining a wider audience. Relentless light from surrounding cities has shut down the largest telescope at Mount Wilson in Southern California. Scientists believe artificial lights should be shielded so that …
WHEN HARVARD researchers Bruce Yankner and Neil Kowall discovered in 1991 that amyloids -- small proteins -- injected into the brain of rats could destroy nerve cells in the same manner as observed in Alzheimer's patients, there was much excitement. Alzheimer's disease is the fourth largest killer in the developed …
IT IS WIDELY believed that higher carbon dioxide levels in the atmosphere will stimulate plant growth and thus help crops and forests fix more carbon - a positive feedback effort that may partially help control the global warming problem. But two recent studies indicate'forests may not be as efficient in …
SCIENTISTS say a vaccine for human lung cancers may be ready soon, allowing a therapeutic cure for the disease. Lung cancer is characterised by an abnormal production of hormones, particularly the human chorionic gonadotropin (HCG). Malignancy is indicated by high lev els of HCG and successful surgery in lung cancer …
SOME PLANTS produce two types of flowers - starninate (males) and bisexual. Scientists thought the role of starninate flowers was more to attract agents of pollination than to donate pollen. But new research shows that while larger floral displays attract more pollinators, staminate flowers are more effective in the dispersal …
SCIENTISTS have enhanced the nutritional value of the potato by inserting a synthetic gene into the plant and are now considering how to use genetic engineering to provide the plant with resistance to pests and disease. The International Potato Centre (CIP) in Peru collaborated with Louisiana State University to produce …
AT THE Intergovernmental Panel on Climate Change meeting in Harare in November, efforts were made to reorganise its bureauto ensure sgientists from the developing world are better represented. But IPCC secretary N Sundararaman said finding scientists from developing countries was difficult and some governments were reluctant to allow scientists to …
THE TWO years covered in this volume, the latest in the series, were the most momentous in the life of Charles Robert Darwin (1809-1882). After studies in Edinburgh and Cambridge, Darwin was heading for an ecclesiastical career in the Church of England when he was invited to participate in a …
INDIA is probably the most industrialised developing country in the world today, with more than a million trained scientists. But this has only resulted in creating a deeply divided society. The last three decades have witnessed a proliferation of institutions set up to promote rural development through science and technology. …
TAKE A small part of a shoot tip and put it in a test tube. Then add some chemicals that will nurture the tissue and lo and behold, the part grows into a full plant. This may sound like witchcraft, but it is precisely what tissue culture technology is all …
Finally, France's former Socialist prime minister Laurent Fabius, secretary of state for health Edmund Herve and social affairs minister Georgina Dufoix are to be tried in a parliamentary court in the AIDS scandal currently rocking the nation. In 1985, when Fabius was prime minister, 1,000 haemophiliacs were given a blood …
WILDLIFE biologists no longer have to risk life and limb to catch a glimpse of elusive animals eager to protect their privacy. Thanks to technology, biologists can now sit back in the comfort of their offices and track the movements of seals and the rapacious foraging of elephants (Science, Vol …
BIOTECHNOLOGY means a lot of things to different people. The new and the traditional coexist and reinforce each other within biotechnology -- now an established and highly interdisciplinary applied field. However, it symbolises big money, in terms of new industries, agricultural practices, patents and research grants. For scientists and academics, …
CERTAIN wasps are inveterate nectar thieves. The wily insects sneak through the back door and loot nectar, damaging the flower and reducing chances of pollination and fruit formation (Current Science, Vol 26 No 10). Insects help in pollination by acting as carriers of pollen grains, picking them up from one …
