Many years, the researchers fail to explain all the origins of the methane, a gas with greenhouse effect, which are found in the atmosphere. A new track seems to have been found (1). A team of the University of Hawaii indeed discovered that an oceanic bacterium produces some natural gas in the ocean, which is then liberated [...]
The solar cells, this walks since the sixties. But because of their weak output and of their cost price, to cross the threshold of competitiveness returns to climb up an impassable mountain. The American Nanosolar had opened a way in producer of cells hundred slimmer times. Researchers of the Massachusetts Institute of technology have [...]
In the inventory of gases with greenhouse effect, the one at least was forgotten. And it is not without consequence since the trifluorure of nitrogen (NF3) sees its use climbing sharp with the frenzy of the consumers for the flat screens of television. Evaluée in four thousand tons a year, the production doubles every year.
Trifluorure [...]
While the European Union multiplies interventions on the international stage to claim one afterwards - kyoto, while its own greenhouse gas emissions (GES) are? The last inventory published by the European Agency of environment brings the beginning of answer: in 2006, the programmes of GES went down by 0,3 %. It is not much, but [...]
Bets are opened. After winter richer in sea ice, waters of the Arctic seem to warm themselves up with a quicker rhythm than last year. Mid-June, the expanse of the floe found weak level of last year at the same time, according to the American national Centre of data on the snow [...]
Typhoons and hurricanes will they be more more frequent and more more violent in coming decades? If the majority of the climatic models lean for an increase of the number and of the intensity of tropical cyclones with the elevation of the temperature of surface of the oceans, discordant voices make themselves heard. Last there dates, that of the American [...]
A grass "antiburp" for ruminants. Here is what Australians and from Néozélandais perfected to limit the quantities of methane issued by ovine and bovine animal husbandry, that represents 14 % of greenhouse gas emissions Australia, and up to 50 % in New Zealand. They have [...]
Several thousand years were needed so that the Sahara becomes such as it is known today. It is what reveals the analysis of sediments taken in the bottom of the lake Yoa, in Chad, by Stefan Kröpelin of the university of Cologne (Germany). 6 000 years ago, the Sahara was covered with lakes and with a tropical vegetation. [...]
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