Tourists travel to California to see the famous sequoia trees. But record-breaking wildfires caused by high temperatures and extreme drought have threatened their existence.
Michelle Mullen produced the film.
If climate change is to be controlled, the COP26 global climate summit will take place in Glasgow in November. It will be important to make significant changes in our daily lives by asking nearly 200 countries for their plans to reduce emissions.
Why the COP26 summit on climate is so important
A simple guide to climate change
Climate change and extreme weather