Reflecting on global warming
A radical plan to curb global warming and so reverse the climate change caused by our rampant burning of fossil fuels since the industrial revolution would involve covering parts of the world's deserts with reflective sheeting, according to researchers writing in the January issue of the International Journal of Global Environmental Issues.
Engineers Takayuki Toyama of company Avix Inc in Kanagawa, Japan, and Alan Stainer of Middlesex University Business School, London, UK, complain that there have been very few innovative remedies discussed to combat the phenomenon of global warming caused by human activities, despite the widespread debate of the last few decades. They now suggest that uncompromising proposals are now needed if we are to avert ecological disaster.
Finding a way to 'stop', or at least minimise, global warming and to even cool the Earth can be achieved by focusing on the primary heat balance between the amount heat produced by human activities and the loss of heat to outer space. They emphasise that efforts to reduce atmospheric concentrations of greenhouse gases, primarily carbon dioxide, are not likely to work soon enough.
Pessimism that minimising carbon dioxide will no longer solve the problem seems to be spreading among environmental specialists," they say. As such, a lateral-thinking approach that acknowledges the fact that the heat created by human activities does not even amount to 1/10,000th of the heat that the earth receives from the sun.
Toyama and Stainer suggest that heat reflecting sheets could be used to cover arid areas and not only reflect the sun's heat back into space by increasing the Earth's overall reflectivity, or albedo, but also to act as an anti-desertification measure. The technology would have relatively minimal cost and lead to positive results quickly. They add that the same approach might also be used to cover areas of the oceans to increase the Earth's total heat reflectivity.
The team's calculations suggest that covering an area of a little more than 60,000 square kilometres with reflective sheet, at a cost of some $280 billion, would be adequate to offset the heat balance and lead to a net cooling without any need to reduce atmospheric carbon dioxide. However, they caution that it would be necessary to control the area covered very carefully to prevent overcooling and to continue with efforts to reduce our reliance on fossil fuels.
Albert Ang | alfa
The most recent press releases about innovation >>>
Die letzten 5 Focus-News des innovations-reports im Überblick:
Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign have discovered a new use for these "bubbly" concoctions that will have major impact on the manufacturer of the world's thinnest, flattest, and one most useful materials -- graphene.
As graphene's popularity grows as an advanced "wonder" material, the speed and quality at which it can be manufactured will be paramount. With that in mind,...
Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.
Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...
For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.
While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...
An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.
The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...
A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.
Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...