Storm Ida: New York flooding and other extreme weather shows our world is increasingly vulnerable - and our leaders are now quick to admit it

Just hours after Storm Ida caused deadly flooding across America's North East, President Joe Biden said it was "yet another reminder that these extreme storms and the climate crisis are here."

"Global warming is upon us," said New York Senator Chuck Schumer.

"We are in a whole new world now," said New York City mayor Bill DeBlasio.

Storm Ida: New York flooding live updates

Given what we know about the science, these might have seemed obvious statements.

But make no mistake, it is a departure. Suddenly, the gap between extreme weather events happening and people daring to link it to climate change is shortening.

It used to be days, sometimes weeks, and always couched in elaborate caveats.

Now it is happening as soon as they reach the microphone.

Perhaps this is because of the increasingly urgent and clear science.

The Intergovernmental Panel on Climate Change recently said that it was unequivocal that human behaviour has warmed our planet, and that this is driving more frequent and more severe heat and rainfall in particular.

Meanwhile, the relatively new field of attribution science - the discipline of directly linking wild weather to climate change - is growing in confidence and speed.

Within days of North America's pacific northwest heatwave in the summer, scientists said it would have been virtually impossible with global warming.

And the evidence is all around us.

Floods in Western Europe.

Fires in Turkey.

Famine in Madagascar.

Our world is increasingly vulnerable, and leaders are increasingly willing to say so. A huge amount of effort is being expended to work out what to do.

And as things get worse, there will be more and more strain on the finite resources available to tackle the problem.

There are the costly and necessary measures to adapt to the change that is already here, from billions spent protecting Lower Manhattan, to shoring up the coastlines and raising buildings in low-lying island and coastal communities.

And then there are the colossal investments needed to reduce emissions and to decarbonise our world.

The two areas - adaption and mitigation - shouldn't compete. But they will.

We are just weeks away from the crucial UN climate summit COP26, where funding will be a central issue.

And as countries rich and poor struggle with the real-time effects of climate change on their doorsteps, the tensions over who gets what and how much will only increase.

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