California Governor Gavin Newsom has declared a state of emergency, saying the fire "threatens critical infrastructure."
Fast-moving McKinney fire in California state goes from charring just over one square kilometre to scorching as much as 160 square kilometres in a largely rural area near the Oregon state line, say fire officials.
Destructive fires in recent years that burned too hot for forests to quickly regrow have far outpaced the US government's capacity to replant trees.
Firefighters battle to contain California's largest wildfire of the summer, a blaze near famed Yosemite National Park that has forced thousands of people to evacuate.
Cooler temperatures have helped firefighting teams gain control over major blazes throughout southwestern Europe and the UK.
President Biden announces executive actions including $2.3 billion in investments to help build US infrastructure to withstand climate disasters.
Health chief calls for readiness "for periods of high temperatures" in the southern European country, where temperatures surpassed 40 degrees Celsius last week.
Fierce heatwave in western Europe leaves much of the continent wilting under a scorching Sun, smashing temperature records and feeding ferocious forest wildfires.
With thousands dying and thousands of hectares of forest land turning into ash, Europe struggles to break the stranglehold of climate change-induced heat waves and wildfires.
Acknowledging the importance of drought mitigation strategies, EU researchers underlined the need to tackle climate change, the root of the problem.
It is the second heatwave engulfing parts of southwest Europe in weeks as scientists blame climate change and predict more frequent and intense episodes of extreme weather.
More than 1,000 firefighters are trying to bring the fires under control in Gironde region, while over12,200 people had been evacuated from the area.
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