Read the text and mark the statements as T (True), F (False) or Ns (Not stated). The effects of global warming are becoming more and more noticeable with the passing of the years. The number of floods, storms and heatwaves has increased as a result of carbon dioxide (CO2) and other greenhouse gases that do not allow the sun's heat to escape the Earth's atmosphere. However, a simple and quite possibly effective idea has been suggested as a way to help lessen the consequences of climate change. Professor Steven Chu, the US Energy Secretary and a Nobel Prize winner, suggests that painting our rooftops white will help the Earth's temperature to drop. The idea is that if enough surfaces - rooftops, pavements, roads — are painted white, more sunlight will reflect off these surfaces and go back into space. This will help cool our planet down. According to scientists, if rooftops and roads were painted white it would reduce the amount of CO2 by billions of tons. This would be the same as taking every car in the world off the streets for 11 years. Not only this, but homes with white rooftops and cars that are painted white wouldn't absorb so much heat from the sun. This means that they would be cooler and people wouldn't have to turn on their air conditioners as much. Pessimists feel that though painting rooftops and pavements in light colours is good in theory, it is just a very small step to take towards reducing the Earth's temperature. What we must remember though, is that there is not one solutig Yobal warming. 1 There has been an increase in the amount of greenh ases in recent years 2 Professor Chu suggests painting every large surface the Earth white 3 Buildings with white rooftops don't need air conditi ing 4 Professor Chu's suggestion has been accepted by n y experts 5 Some people feel that painting surfaces white will t be enough to solve the problem of global warming