Worldwide energy use has fallen for the first time in almost 30 years, according to a report from the International Energy Agency (IEA). The World Energy Outlook 2009 report says international energy demand is lower this year compared to 2008 levels, mainly because of the global recession. However, it also warns demand will quickly increase again if government regulations don’t change, projecting a 40 percent increase by 2030. The report offers a timetable for how to rein in global warming, including increased energy efficiency, greater reliance on renewable energy, and replacing gas-guzzlers with hybrid and electric vehicles.