By Andrew Williams •
March 30, 2009
US Scientists have revealed how natural gas locked up in frozen water crystals could provide massive amounts of energy, and claim that it could even be totally emissions-free.
The astonishing claim was made by Tim Collett of the United States Geological Survey at last weeks national meeting of the American Chemical Society. Collett told the gathering that, to the naked eye, clathrate hydrate (CH) looks like everyday ice but, as well as being partly made of water, the molecules are also organised into “cages”, which trap individual molecules of methane.
Remarkably, a new method of extracting the methane and ’swapping’ it with carbon dioxide could turn the substance into a revolutionary carbon-neutral fossil fuel.
By Michael Ricciardi •
January 26, 2009
World Species Survey details gloomy outlook for many animal species.In early October of 2008, the results of a global species survey, conducted by the International Union for the Conservation of Nature, were released. The numbers are startling:
- At least a quarter of mammal species are headed toward extinction in the near future.
- Nearly 80 percent of the primate species in southern and southeastern Asia are immediately threatened.
- At least 22 percent of reptile species are at risk of extinction.
- Perhaps 40 percent of North American freshwater fish are threatened.
- In Europe, 45 percent of the most common bird species are rapidly declining, and so are the most common bird species in North America.
But perhaps these figures are a bit too abstract. Here’s a more precise way to look at the present state of bio-diversity on Earth.
