Are they a way to combat warming asteroids?

Scottish scientists thought a radical way to combat global warming. They suggest to cover a portion of the sunlight that falls on the ground with a giant dust cloud. Dust can be obtained by an asteroid, by installing an electromagnetic ball. He will crush his constituent substance, will shed dust bandage and simultaneously force the asteroid to move the point required.
Cloud of dust should be placed in the so-called Lagrange point - the line between the Sun and Earth, where gravity mutually compensated. There should also be placed one or more asteroids. Creating dust cloud will require effort and huge income, but the problem is not only the cost of the project, says astrophysicist of the Institute of Astronomy in the name of Sternberg Vladimir Surdin:

- Do you need all the time the supply of new dust, use for the purpose of new asteroids. While the powder to be gradually removed from Lagrange point will be wrapped around the Earth and pollute the space around the ground, where are enough satellites and space apparatus, which may stop working.

In addition, scientists fear that the cloud of cosmic dust can lead to unexpected consequences on Earth. Astrophysicist opinion of the Institute of Astronomy of the Russian Academy of Sciences Dmitry Vibe:

- It would be even better if the idea of ​​throwing a look klimatologët. Cloud of dust will reduce the level of solar radiation, the temperature on Earth would fall, as we dream. We will be very happy if it happens, while it will continue to fall further. But how nice it would be already having an uncontrolled dust cloud is something completely unclear. It may appear many times more dangerous than an asteroid unchecked.

So it would be better if not crushed asteroids, but with climate controlled terrestrial methods. In particular, by refusing the use of carbon fuels (coke), says astrophysicist Vladimir Surdin. Humanity now gradually shifting to environmentally clean energy sources such as wind, waves (ups and downs), solar lights. They are more than enough for our civilization. Must simply learn to use them effectively. Scots is a nice idea, but unrealistic, conclude scientists.