How do wildfires start?

Wildfires have been raging across parts of the US, southern Europe and beyond in the past couple of months. Scientists have now confirmed that July 2021 was the worst month for fires on record.
Human behaviour such as leaving campfires unattended or natural causes such as extreme heat contribute to starting blazes that can overwhelm areas within minutes.
Watch this video explainer to learn more about the catalysts for wildfires and how advancing climate change isn't helping to quell the threat.
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