Carbon Dioxide

Renewables 2024 global status report: global overview

This overview sets the scene for the various modules in the Renewables 2024 Global Status Report Collection. It provides high-level trends on the status of renewables in the wider fossil fuel-dominated energy system in the context of global challenges such as climate change, development goals and the geopolitical landscape. Urgent …

Austerity plan

THE Japanese cabinet recently approved an energy-conservation programme which aims at making drastic reductions in carbondioxide (CO2) emissions. The energy package includes 66 plans including one which would restrict the number of cars allowed into heavy traffic zones. The plan seeks to achieve zero growth in energy consumption by the …

Positive impact

climatologists have always regarded carbon dioxide (co2) as dangerous since it is supposed to be one of the principle causes of global warming. But then co2 also performs the valuable function of enhancing floral growth. Rise in atmospheric co2 concentration and possible concomitant climate change has been seen to affect …

Clean Dude

Bhutan could help absorb carbon dioxide (CO2) and curb global warming as greenhouse gas emissions by the country is reportedly insignificant. Results of a study on climate change conducted by two Danish consultants showed that in a completely forested area the per capita CO2 emission was 19.6 tonne, in a …

Weeded problem

"Nitrogen enrichment is pushing us towards a weedier world,' says David Wedin of the University of Toronto, Canada. Burning fossil fuel releases nitrogen oxides, which ecologists believe could act as fertilisers and promote luxuriant growth of weeds. This shift in vegetation could hinder the earth's ability to moderate global warming, …

Vicious circle

jorge Sarmiento and Corinne Le Quere of Princeton University in New Jersey, us, have observed that warmer oceans are more stratified and cause the ocean circulation system to slow down. As a result, they absorb much less carbon dioxide (co2)

A no to yes

the role of the Dutch as pioneers in international environmental policy seems to have been relinquished. The question of reducing carbon dioxide (co2) emissions to three per cent below the 1990 levels by the year 2000, is under debate in the Netherlands. Although climate change was a hot issue in …

Sieve with a change

Researchers at Tokyo Metropolitan University in Japan have developed a material which can be attached to chimneys of power plants and factories to remove carbon dioxide (CO 2 ) from emissions and help protect against global warming. This material, a sieve-like membrane which can selectively remove CO 2 from mixed …

Sooty symptoms

in view of a recent discovery, the models used to estimate earth's response to climate change stand for a rethink. While studying the effect of marine life on global warming, scientists found that the role of oceans in carbon fixation had actually been overestimated. The new findings suggest that half …

For a cooler world

it could take something as simple as iron supplements to combat the spectre of global warming. It was John H Martin, an ocean scientist who had first suggested that fertilising the seas with thousands of tonnes of iron compounds could result in the sudden spurt of marine plant organisms called …

All for a change

One would that if more than 1,000 scientists belonging to various countries and working for 10 years, pointed out the grave danger posed by increasing carbon emissions to the climate as well as the global economy, world leaders would take notice and initiate restorative action. Instead, they choose to either …

All for a change

one would think that if more than 1,000 scientists belonging to various countries and working for 10 years, pointed out the grave danger posed by increasing carbon emissions to the climate as well as the global economy, world leaders would take notice and initiate restorative action. Instead, they choose to …

The climate for a change

Are the nations of the world serious in their much-touted efforts to control greenhouse gas emissions? Vinayak Rao examines the motives, moods and manifestoes in the run-up to the forthcoming climate change conference in Geneva.

Chink in the armour

The dynamism of Western academia never ceases to amaze me. Once an idea enters the people's mind-set, scholars of all hues begin analysing it from the standpoint of different disciplines. This is quite unlike what happens in a country like India. Gunnar Myrdal in his '60s trilogy, Asian Drama, had …

Killed by a belch

IT WAS 250 million years ago that life took its first beating - the worst ever - when mass extinctions marked the end of the Permian period. A group of American palaeontologists say that they have evidence to prove that the extinctions in the Permian period, which devoured 90 per …

Fume out

Scientists from the British Natural Resources Institute and the Kenyan Agricultural Research Institute working at Kenya's Rift valley suggest that volcanic carbon dioxide, instead of methyl bromide, could be used to exterminate granary pests (New Scientist, Vol 148, No 2004). Experiments have been conducted on more than 2,000 tonnes of …

Use less,gain more

LET us accept the general consensus of scientists that global warming is happening, that it is caused largely by carbon dioxide released by burning fossil fuels, and that it cannot be reversed without a reduction in the use of fossil fuels. Following on from Rio and more recently Berlin, most …

Cutting Off C0<sub>2</sub>

A GROUP Of Scientist at the Los Alamos National Laboragtory In the us have come up with a unique strategy to Pee the carbon dim (Cod gas emans from fuel-burning plants - report responsible for the global war" phenomenon - harmless. Atcordin Klaus S Lackner, the chief physich the laboratory, …

"The North has not kept its commitments on technology transfer"

India has been increasingly under pressure from the North to reduce her carbondioxide emissions. But many of the developed countries have not done enough to cut down their own emission levels. Doesn't this expose the North's double standards? We have called for a differentiated but common responsibility among the countries …

Fuel from C0<sub>2</sub>

A group of chemists in Switzerland has devised a way to convert Ramospheric carbon dioxide - the main greenhouse gas - into fuel (New Scientist Vol 146, No 1971). The scientists first blew carbon dioxide saturated with water into a matrix of glass wool coated with titanium dioxide, which acts …

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