Leonardo DiCaprio is in Glasgow for COP26 - but did you know he was a climate activist? 

The climate conference has seen some of the world's most influential people descend on Scotland's biggest city - including the Titanic actor. 

DiCaprio has been involved in climate and environmental activism for over 20-years, spanning most of his career.

Here's what you need to know about why he is at Glasgow's COP26...

Why is Leonardo DiCaprio at COP26 in Glasgow?

Leonardo DiCaprio is somewhat of a climate change activist, having been outspoken environmental issues throughout much of his long career. 

In fact, he has been discussing environmental issues since before it had even reached the main public domain - he started The Leonardo DiCaprio Foundation in 1998. 

His foundation gives money and grants to conservation projects, with the mission of protecting the Earth’s last wild places and creating solutions to build a better and more sustainable relationship between humanity and the natural world.

As well as his own foundation, the award winning actor serves on the board of various climate and environmental groups, including the World Wildlife Fund, the Natural Resources Defense Council, International Fund for Animal Welfare, Pristine Seas and Oceans 5.

He has also featured in various media campaigns and adverts to spread the word and raise awareness of environmental issues, while his Twitter bio describes him as an "actor and environmentalist". 

What is Leonardo DiCaprio doing at COP26?

Ahead of the climate conference in Glasgow, Leonardo DiCaprio tweeted: "The climate crisis is here. #COP26 must be a turning point to protect people and the planet. Leaders, the world is watching and urging you to rise to this moment. There’s no time to lose. #ActNow." 

So far, he has been spotted in Maryhill at an event at The Engine Works.

He has also urged leaders "to take crucial climate action" at COP26, in order to "save humanity". 

In a tweet on Monday evening, the actor said: "I join @antonioguterres in urging leaders at #COP26 to take crucial #ClimateAction, safeguard our future, and save humanity. Now is the time for ambition, solidarity, and action. @UN"