The impact humans are having on climate change will be laid bare this morning in the first part of a major UN report.
It's expected to reveal how global warming is changing the world.
It comes as huge wildfires are devastating southern Europe and parts of the US.
The report's expected to warn a 1.5 degree rise in the Earth's temperature will be reached 10 years earlier than previously thought.
The findings are also due to lay out the scale and pace of change to the world's oceans, ice caps and land.
Istanbul Metropolitan Municipality members rescue a dog from wildfires."It's Not A Wake Up Call - It's An Emergency Call"
Climatologist Professor John Sweeney from Maynooth University says it'll highlight the need for action:
"This isn't a wake up call, we've had those."
"It's a 999 emergency call for the state of the planet."
"What it's telling us really is that we're running out of time rapidly."
He says we're going to reach "some critical tipping points," within the next 10 to 20 years.
Fire fighters work to stop forest fires near a village at Marmaris, a Mediterranean coastal city in Antalya, Southern Turkey.Wildfires Envelop Greece And Turkey
Greece is among the nations worst affected by ongoing wildfires.
John Skobris is on holiday from Canada - he's joined his friend, Ihlias Matsagouras, to help tackle them.
Watching people lose their houses, their land, their livelihoods, it's sad," John says.
Adding to that, Ihlias says, "It's not easy to see."
"You know, my family's here too, I have four kids."
