20 Interesting Geology Facts About Rocks, Volcanoes and Earth
Earth is 4.5 billion years old, continents move as fast as fingernails grow, and Everest's peak was once seafloor. 20 interesting geology…
Read Article →Simple, science-backed answers to everyday questions about nature: why the sky is blue, why ice floats, why leaves change color and why the ocean is salty.
Earth is 4.5 billion years old, continents move as fast as fingernails grow, and Everest's peak was once seafloor. 20 interesting geology…
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If ice sank, lakes would freeze from the bottom up and much aquatic life could not survive winter. Why floating ice matters,…
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Quick answer: Leaves change color in autumn because trees stop making chlorophyll, the green pigment, as days get shorter and cooler. As…
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Quick answer: Ice floats because it is less dense than liquid water. When water freezes, hydrogen bonds lock its molecules into an…
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Quick answer: Why is the ocean salty? Because rain slowly dissolves minerals from rocks on land, and rivers carry those dissolved salts…
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Quick answer: The sky is blue because molecules in the air scatter short-wavelength blue light from the Sun much more strongly than…
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Auroras, sundogs, halos, the green flash and moonbows: stunning natural light phenomena, what causes each one, and when you can see them.
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Bioluminescent bays glow blue when the water moves, thanks to tiny plankton. Why they glow, Puerto Rico's 3 famous bays, where else…
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Explore 10 of the world's most striking geological wonders and landmarks, how each formation was created, and what makes it unique.
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Volcanic lightning, fire whirls, penitentes, Blood Falls and flammable lakes: strange weather and nature phenomena, and the science behind each one.
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