The 92-year-old TV presenter blamed humans for the "disaster of global scale, our greatest threat in thousands of years".
The Arc de Triomphe is illuminated in green with the words "Paris Agreement is Done", to celebrate the Paris U.N. COP21 Climate Change agreement in Paris, France, Nov. 4, 2016. Speaking from the 'People's Seat, ' he admonished the almost 200 nation delegates present saying: "The world's people have spoken. Their message is clear: Time is running out", Attenborough said Monday.
"Even as we witness devastating climate impacts causing havoc across the world, we are still not doing enough, nor moving fast enough, to prevent irreversible and catastrophic climate disruption, " Guterres told delegates from nearly 200 countries who gathered in the city of Katowice.
David Attenborough was chosen to represent the world's people at the COP24 summit in Katowice, Poland.
Of the 10 countries in the world considered most threatened by climate change, seven are in Africa - Central African Republic, Chad, Eritrea, Ethiopia, Nigeria, Sierra Leone and South Sudan.
Representatives of some of the most powerful countries and biggest polluters will be conspicuous by their absence as the United States has said it is leaving the U.N. process and China was not expected to send its top politicians.
In Paris, three years ago, countries collectively agreed to keep global temperature rises to no more than 2C above pre-industrial levels, and if possible, to limit the rise to 1.5C.
Renowned English broadcaster and natural historian Sir David Attenborough delivered a stark warning about the future of our planet during the UN Climate Change Summit in Poland.
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U.N. Secretary-General Antonio Guterres, who issued a dramatic appeal to governments Monday to confront the threat of unchecked climate change, said he hopes the event in Poland will serve as a stepping stone for a meeting of leaders he is convening on the sidelines of next year's General Assembly.
TRT World's Assed Baig reports.
Severely reducing emissions is the only way reach the 1.5-degree goal, experts say, but it will be an expensive feat. "So I think it is perfectly normal that his Holiness the Pope, not only this Pope, it comes from the past, have a very positive position in relation to climate action", he said.
There would also roundtables on key issues such as: Finance and Climate action; SDG 12 (responsible consumption and production) and climate; SDG 8 (decent work and economic growth) and climate; resilience and climate action.
G20 leaders on Saturday wrapped up their summit by declaring the Paris Agreement "irreversible".
The 2015 accord set a goal of keeping average global temperature increases well below 2 degrees Celsius (3.6 Fahrenheit) by the end of the century.
The First Minister said the money will support the work of the Marrakech Partnership for Global Climate Action, which promotes collaboration between governments, businesses and investors to lower emissions.
Guterres said climate change was already taking its toll.
Attenborough is attending the UN's "Conference of parties" also called COP24 for its 24 meeting as policy-makers hammer out a rule book to implement the Paris Climate Accord.