Latest / What If: Science, Theory, and Possibilities
Why Earth Is Perfect for Life—and How It Could All Change
What makes Earth so perfectly suited for life—and how fragile are those conditions? Explore the factors that make our planet habitable, the immense scale of its oceans, and what could happen if Earth lost oxygen or became a water world.
Journey through Earth's ancient history and imagine a future without humanity: how long would it take for nature to erase every trace of us?
Discover more science with Popular Science, a free streaming channel featuring What If, engineering explorations, rocket launches, movies, space, and Earth sciences: https://underknown.com/popularscience/
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The skinny
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