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The world is decades behind schedule to achieve ambitious goals to fight poverty, inequality and other ills, development experts warn, as global leaders prepared to meet to weigh their progress.
The high-level summit in New York next week will be the first to focus on the sustainable development goals since they were adopted by the United Nations four years ago.
The 17 sustainable development goals, known as SDGs, set out a wide-ranging "to-do" list tackling conflict, hunger, land degradation, gender inequality and climate change by 2030.
Assessments of their progress have been bleak.
On Wednesday the Social Progress Imperative, a US-based nonprofit, said the goals were unlikely to be reached until 2073, more than four decades past their target date.
"Progress isn't fast enough to achieve the ambition of the SDGs within my lifetime, and that's a problem," said Michael Green, chief executive of the Imperative. "There are some countries that are going backwards and letting us down."
The focus of next week's meetings will be "sustainable and inclusive development, leaving no one behind," UN Secretary-General Antonio Guterres said at a news conference on Wednesday.
"Let's face it. We have no time to lose," he said.
"I told leaders not to come with fancy speeches, but with concrete commitments."
Holding a global summit every four years was mandated when the goals were first approved to assess progress and boost public awareness.
"The UN General Assembly week in New York is really an opportunity for the world to step back and look at the progress in helping those most in need," said Bill Gates, co-founder of Microsoft Corp and the Bill & Melinda Gates Foundation.
Efforts to improve access to basic health care and end inequality are not doing well, he said.
"If we don't accelerate progress, the gaps will continue to get larger," he said. "We are not on track to achieve these goals."
Placing blame on growing inequality and on climate change, Shantanu Mukherjee, policy chief at the UN Department of Economic and Social Affairs, said: "The pace of progress is faltering.
"Not only are business-as-usual efforts losing steam, ... there are trends that threaten to undermine and even reverse the progress already being made on a massive scale," he said at a recent release of a report on the goals by leading scientists.
Their report said countries must address vast gaps in wealth distribution and improve access to economic opportunities and technological advances that undermine innovation and growth.
Progress has been made on the goal of ending extreme poverty, but in other areas, "progress has been slow or even reversed," a UN assessment said this summer.
"The most vulnerable people and countries continue to suffer the most and the global response has not been ambitious enough," it said.
The cost of implementing the global goals has been estimated at $US3 trillion ($NZ4.7 trillion) a year.
The goals will fail without new ways to ease national debts, boost wages and expand trade, top financial organisations including the International Monetary Fund and World Trade Organisation said earlier this year.
Money needs to be freed up through international trading and financial systems, they said.
- Thompson Reuters Foundation