BRUSSELS (Reuters) - Top European Union environment officials will press Washington next week to do more to curb global warming, in a bid to prevent the collapse of world talks on climate change, the European Commission said. Peter Jorgensen, spokesman for EU Environment Commissioner Ritt Bjerregaard, told Reuters that he will meet senior State Department officials Stuart Eizenstat and Timothy Wirth in Washington on November 4 to stress the importance of a global treaty that will commit industrialised countries to significant cuts in emissions of greenhouse gases. Delegates to a United Nations conference on global warming are meeting in Bonn until Friday to try to reconcile their differences so that a binding treaty on curbing greenhouse gases can be approved in December in Kyoto, Japan. But after seven days of talks so far, the gaps between the 150 nations present in Bonn were still so wide that Bjerregaard feared the negotiations would flounder, Jorgensen said. All participants agreed at the Rio Earth Summit in 1992 to stabilise emissions at 1990 levels by 2000. Europe had hoped the long-awaited U.S. proposal would be much more ambitious, especially as America is responsible for over 20 percent of world output of greenhouse gases. As well as talks with the U.S. administration, Bjerregaard hopes to put the EU's case to the Senate, which has told President Bill Clinton it will not approve any carbon dioxide-cutting measures that will affect the U.S. economy. The commissioner, who is Danish, had not ruled out a later visit to Tokyo to press Japan to take a leading role in pushing for an ambitious climate change treaty, Jorgensen said.