TechnologyLasers set to zap engines into running more efficiently Replacing the spark plugs in engines with lasers could lead to more complete fuel combustion and greener cars 51¶¯Âþ
EarthTwin moves on Arctic drilling stir environmental debate As the White House announces that it wants to ban drilling for oil in parts of Alaska, Shell says it is reviving plans to drill in the Chukchi Sea 51¶¯Âþ