Smoke from Australia fires circling the world

The wildfires in Australia have caused "unprecedented" conditions that will effect the entire world, according to NASA. The space agency has released satellite images that show smoke from the fires moving around the globe.

"The smoke is expected to make at least one full circuit around the globe, returning once again to the skies over Australia," write Colin Seftor and Rob Gutro of NASA's Goddard Space Flight Center.

Unprecedented conditions like the searing heat of the fires and historic dryness have caused "pyrocumulonimbus events," which are fire-induced thunderstorms. An uplift of ash and smoke, which then cools, creates a thunderstorm-like occurrence but without the rain. Lightning from these storms can then spark additional fires.

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