- Experts called for more action to reduce carbon emissions and move faster towards renewable energy and taxes on carbon emissions
- Taxes on carbon emissions provide an incentive to cut pollution.
- Assistant United Nations Secretary-General for Climate Change Ovais Sarmad warned that the world is facing an "existential crisis".
The threat of climate change has overtaken the prospect of nuclear war as the most pressing concern facing humanity, a former Colombian president and Nobel peace laureate warned Monday.
"After World War II, the world was facing a threat from a nuclear war," Juan Manuel Santos, a staunch environmentalist, told the World Green Economy Summit in Dubai.
"The threat from a nuclear war remains... but we have something worse, which is a certainty. That is climate change," he said.
"If we don't act, we will perish. We must act for survival."
Santos, who won the 2016 Nobel Peace Prize for his efforts to bring the country's more than 50-year-long civil war to an end, also won plaudits for his green policies while in office.
Experts at the two-day conference called for more aggressive policies to achieve the Paris Agreement goal of preventing global average temperatures from rising more than 2 degrees Celsius (3.6 Fahrenheit) above pre-industrial levels.