Solar street lights are gradually replacing widely used traditional public street lights. They have a crystalline silicon solar battery to supply power, a maintenance-free controlled battery to store electricity, a ultra-bright LED lamps as light source. And they are controlled by a smart charging and discharging controller. Continue reading “All about Solar Street Light”
President Obama announced a large campaign to cut greenhouse gas pollution in the US during his speech at Georgetown University yesterday. He also commits to promote actively clean energy and to act in order to better protect Americans from global warming.
According to the White House, this project should allow the president to reach his target fixed in 2009 to reduce, by 2020, greenhouse gas emission by 17% compare to 2005. President Obama stated during his speech that “Americans across the country are already paying the price of inaction” against global warming. He reminded us that last year was the warmest year in the United States history. He added “The question now is whether we will have the courage to act before it’s too late. And how we answer will have a profound impact on the world that we leave behind not just to you, but to your children and to your grandchildren.” Continue reading “Obama plans to reduce greenhouse gas pollution”