Science today can go up to any level to fight for various concerns affecting human in habitation One of such concern is global warming. What scientists today are suggesting is that an array of highly reflective mirrors could be placed in Lagrange point L1, which is basically a gravitationally stable orbit around the Earth. When the mirrors will be placed in this orbit surrounding the Earth, they will behave as stationary objects and will tend to reflect the sun rays back into the space, helping Earth to cool down a bit.
Scientists believe that this will help reduce Earth’s temperature by as much as 1 degree centigrade. Although this may look a little bizarre proposition but it’s true. To create an effective impact on the Earth’s environment, the mirrors would need to have a surface area of around 600,000 miles. The cost of launching this number of mirrors is estimated at $10,000 per pound, which if summed up would be around 26 times the US national debt.
Although launching this numbers of mirrors into the space would benefit the overall Earth’s environment but it has its drawback too. As per the research that has been conducted it’s estimated that although the Earth will cool down as a result of this task but the negative part is that America and Eurasia will receive less rainfall as an impact of this effort. This will result in droughts across these regions. Scientists believe that maintaining both temperature and rains by artificial means such as launching the mirrors into space is a near impossible task to achieve.
Renowned scientist Lowell Wood of Lawrence Livermore National Laboratory introduced this idea for the very first time before the US government. Although Lowell Wood is quite confident about his research and following the proposition of launching the mirrors, he is still apprehensive due to high amount of money involved (trillion of dollars) and the maintenance of this project once it’s completed.
Apart from placing the space mirrors into the Lagrange point to help fight global warming, some other theories are also prevalent that claim to reduce the Earth temperature rise. One such theory is placing highly reflective balloons into the space, which shall surround the earth and will in effect block some amount of sun’s radiation from coming to the Earth. Again cost of this project and subsequent maintenance would be quite high similar to mirror placing project.
No matter how much scientific progress we may make or how much efficient we may become in executing hi tech tasks as mentioned above, still the call of the day is to leave small carbon footprint in whatever task we do. Right from using large amounts of gas to travel from one place to another or to cut trees to make paper and other stuff, we need to carefully monitor each and every activity that contributes to global warming.