The fires, likely to be the costliest in world history, were made about 35% more likely due to the 1.3°C of global warming that has occurred since preindustrial times.

We must rethink city planning and development following the LA fires, says UCLA Professor Alex Hall, who advises building homes away from wildlands.

With battery-powered cars, windmills, and solar farms California hopes to shrink its carbon footprint to nothing. But some see a downside.

For more than a century, conservation policy has focused on economic development and wisely using natural resources.

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