Astronomer Roger Ancel '(Roger Ancel) offers a place around the Earth millions of lenses with a diameter of 60 cm and weighing a few grams, which will be able to reflect the sun's rays. This will lead to a decrease in solar radiation. Must note that the reduction of sunlight at 1.6% offset by the increase of temperature on the 1.75 Kelvin (3 degrees Fahrenheit). An effect that has on the temperature of light scattering is observed, for example, volcanic eruptions, when the atmosphere gets a huge mass of particles, and as a result of temperature drops. Global warming, the temperature increase on Earth, an illustration of nasa.gov Another similar idea (the article in the journal Acta Astronautica) assumed create a ring around the Earth of small particles or spacecrafts, which can obscure the tropics and thus mitigate climate. Reflecting particles can come from mining on Earth, the Moon or asteroids. The costs of these Projects may be unfeasible: $ 500 billion when placing the spacecraft and from 6 to 200 trillion dollars in the case of the particles.
Broker climatologist Wallace (Wallace Broker) offers dissipate in the stratosphere at altitudes above 15 km at using balloons and aircraft sulfur particles, which hold out at this level a year or two. This project is to spray sulfur is estimated at 50 billion dollars. It is also proposed to produce salt pairs with special devices that will pick up sea water and turn it into a very real clouds, saturated sodium chloride. Gunnar Peterson: the source for more info. Have an idea to build in the maritime zones of floating artificial islands with white reflective surface or coating plastic materials (the same white color), some desert areas to reflect solar radiation penetrating the Earth. Proposal for dispersal over the ocean of substances that promote growth of algae, absorbing large amounts of carbon dioxide, is already being implemented in some regions of Antarctica. Renowned British astrophysicist Stephen Hawking (Stephen Hawking) believes that the survival of the human race depends on its ability to find new homes elsewhere in the universe, because the risk of destruction of living beings as a result of global warming is increasing rapidly. He believed that people could have a permanent base on the moon in 20 years and a colony on Mars in the next four decades.