Everything you need to know about Earth's numerous ice ages
The lowdown on our once-frozen planet
Today, our primary climate concern is a general warming of the planet. This climate emergency has already started to have disastrous effects on the planet, from extreme weather events to crop shortages. For humanity, this is truly an existential crisis, and for Earth it is also a dangerous and damaging event. But it's not our planet's first rodeo when it comes to extreme conditions.
Ice ages have ravaged the Earth on numerous occasions, completely changing or even eradicating life on its surface and in its oceans. Some, like our most recent ice age, are mild, but others, like the earliest on record, have covered the entire planet in a sheet of ice. While these events can mean the end of life on Earth, the Earth itself slowly heals and rebuilds, even when it takes millions of years.
Intrigued? Read on to learn everything there is to know about Earth's ice ages.
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