This is the Guardian. A cold rent for humanity.

Tonight we begin with the wake-up call from the United Nations on what they call the unequivocal

impact humans are having on our planet.

Emissions of greenhouse gases need to peak within the next three years

if we're to stave off the worst effects of climate change.

And even then, we'd still need new technology to suck carbon dioxide out of the skies by the middle of the

century.

We have a choice, collective action or collective suicide.

It is in our hands. Warnings about the climate crisis are becoming increasingly desperate.

Nearly half of humanity is already at risk from floods, droughts, extreme storms and wildfires.

And with temperature records tumbling and parts of the world literally burning around us,

the situation today can feel terrifying enough,

while the future can seem downright apocalyptic.

But activists and scientists will tell you

that climate doomism is just as dangerous as climate denial.

Which is why today I'm speaking to Caroline Hickman, a psychotherapist and researcher who focuses on eco-anxiety. How can we process the way that we feel about the

greatest threat humanity has ever faced? And can we turn feelings of climate doom into something positive.

From the Guardian, I'm Anan Jagatia, sitting in for Madeline Finley.

And this is Science Weekly. weekly.

So Caroline, first of all, could you just tell me what eco-anxiety or climate anxiety actually is? This is not a new thing that we're struggling with, it's been around for many years, but in the

past perhaps it was confined to scientists, environmentalists.

Now what we're seeing is this is going into the wider public,

...