Today's one-day summit at the annual UN General Assembly gathering of more than 100 world leaders is a forum for non-binding pledges. It was designed to lay the groundwork for a new global treaty to tackle climate change in December 2015.
"Today we must set the world on a new course," United Nations Secretary-General Ban Ki-Moon said in opening remarks.
And world leaders took over with the first of many of the non-binding pledges, promising by mid-morning a total of at least USD 5 billion to help the world become more sustainable.
That often includes turning away from the burning of coal, oil and gas and away from the destruction of the world's carbon-absorbing forests.
Also Read
The European Union offered a rare proposal, specific targets beyond 2020, saying its member nations would cut greenhouse gases so that by 2030 they would be 40 per cent below the 1990 level.
Jose Manuel Barroso, president of the European Commission, stressed it could be done without harming the economy in brief today speech. He said over the next seven years, the European Union would provide USD 3 billion euros (nearly USD 3.9 billion) to help developing countries become more sustainable.
"The European Union is on track to meet our targets and at same time we have seen our economy grow," Barroso. "We prove climate protection and a strong economy must go hand in hand."
Venezuelan president Nicolas Maduro used the opportunity to chastise "polluting powers" for causing an "evil of such planetary dimensions" and then wanting to barter their way out of their responsibilities.
Seychelles President James Michel called small island nations like his "victims of this pollution" and said it was up to the countries that burn the most coal, oil and gas to do the most.
"If they don't do something the Earth will not survive and that will be the end of us all," Michel said in an interview with The Associated Press before the start of the summit today.