The head of the International Energy Agency said in London Wednesday that economic downturns should not derail energy policy goals.

Business News In Brief ENERGY The head of the International Energy Agency (IEA) has said oil prices should ease in coming months, as he revealed that the volume of global electricity supplies coming from renewable sources will have to rise dramatically.

By James Kanter In one of the strongest warnings so far about the world's thirst for energy, the International Energy Agency said Friday that investment totaling $45 trillion might be needed over the next half- century to prevent energy shortages and greenhouse gas emissions from undermining global economic growth.

By James Kanter The International Energy Agency, the foremost energy monitor in the world, said Friday in a report that investment totaling $45 trillion might be needed over the next half-century to prevent energy shortages and greenhouse gas emissions from undermining global economic growth.

By Takuya Karube, Kyodo News International, Tokyo Jun. 6--TOKYO -- The world needs to invest at least an additional $45 trillion in technology and its deployment through 2050 to halve global carbon dioxide emissions from current levels by that time, the International Energy Agency said Friday.