Issue Date: Feb 15, 2001
mangrove vegetation along the 30,000 square kilometre coastline of Gujarat has reduced by 33.5 per cent in past two decades, reveals satellite data from the space application centre of the Indian Space and Research Organisation (isro) in Ahmedabad. Though the 1998 cyclone is cited as the main reason, human activities are also to be blamed. "Till a few years ago, there were 10 species of mangroves along the Gulf of Kachchh, but now there is only one," says Y D Singh, director of Gujarat Institute of Desert Ecology, Bhuj.
Issue Date: Jan 15, 2001
A stream originating in Nevado Mismi, a mountain in southern Peru, is said to be the exact source of the Amazon river, the National Geographic Society reported. Global Positioning System (gps) equipment was used by a five-nation expedition to take measurements. The countries that participated in the expedition included the us, Poland, Peru, Canada and Spain.
Issue Date: Nov 30, 2000
A "spy in the sky" satellite is being tested by coastguards in Canada in an attempt to catch ships illegally discharging oil into the North Sea. The satellite, called Radarsat, is part of an eight-month trial ordered by the Maritime and Coastguard Agency. It is hoped that the satellite, which can detect slicks using radar even on cloudy days, will give agency staff a faster way of homing in on polluting vessels.
Issue Date: Sep 30, 2000
the ozone layer over Antarctica has depleted severely, according to the World Meteorological Organisation ( wmo ), a un agency.
Issue Date: Sep 15, 2000
a canadian researcher has discovered answer to one of the most crucial environmental challenges facing the world: how to save coral reefs. Ellsworth LeDrew, a geography professor at the University of Waterloo in Ontario, has devised a mathematical formula that will automatically scan satellite images to uncover changes in coral reefs.