David Attenborough: 'The collapse of our civilizations is on the horizon'

David Attenborough: 'The collapse of our civilizations is on the horizon'

According to Reuters, few protests are expected to take place in Katowice itself after Poland placed restrictions earlier this year on "spontaneous assemblies" outside the summit.

A key issue up for debate is how the fight against climate change is funded, with developed and developing nations still world's apart in their demands.

Veteran naturalist and broadcaster Sir David Attenborough warned that climate change will cause civilizational collapse if world leaders fail to set the global community on a low-emission path.

Attenborough also promoted the "", a Facebook campaign the launching that will recommend actions people can take to protect the planet.

The United States, meanwhile, reiterated at the G20 summit in Argentina on Saturday its decision to withdraw from the Paris accord and Its commitment to all energy sources.

But the human-led impact of climate change is already being observed around the world - from extreme weather to devastating fires.

Challenge: Naturalist David Attenborough addresses the climate change conference in Poland.

It is aimed at fleshing out the promises agreed in the 2015 Paris climate accord through which nations agreed...

"We are in trouble, we are in deep trouble with climate change".

"Right now we are facing a man-made disaster of global scale, our greatest threat in thousands of years: Climate change", Attenborough said as the worldwide climate conference got underway with talks on how countries will implement the 2015 Paris Agreement limiting carbon emissions.

Negotiators from around the world opened the United Nations' annual climate change conference Sunday in a Polish city built around mining coal, widely seen as a main culprit behind global warming.

Guterres called on representatives to cement funding agreements, allowing the worldwide community to take firm steps towards green solutions, suggesting the world was "nowhere near where it needs to be" on moving to a low-carbon economy.

To inject momentum, the World Bank Group on Monday said it would provide a further $200 billion over five years from the start of the next decade. "Time is running out", he said. "Otherwise they will say, 'We don't want such policy"'. "The continuation of civilisations and the natural world upon which we depend is in your hands".

Negotiators at the talks will hear details of a global review on climate change-tackling efforts, and the pressure is on to work towards increasing commitments from countries by 2020.

The Paris accord set a goal of limiting the rise in global temperatures to less than two degrees Celsius by 2030.

Delegates at the talks said the biggest issues were likely to include finance and the level of scrutiny associated with monitoring individual nations' emissions.

Thunberg, who protests outside Sweden's parliament each week and has inspired students in other countries, said absent leaders such as U.S. President Donald Trump and German Chancellor Angela Merkel "don't realize how much power they have".

The British environmental website Carbon Brief attributed Attenborough's change in perspective to a lecture by American scientist Ralph Cicerone in 2004, in which Cicerone showed graphs of world temperature, global population and the make-up of the atmosphere. Eighteen of the 19 warmest years on record have happened since 2000. California experienced its deadliest fire in history this month.