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What is ammonium nitrate, the chemical that exploded in Beirut?
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How to Understand COVID-19 Numbers
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Humans inhabited North America in the depths of the last Ice Age, but didn't thrive until the climate warmed
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Cell-like decoys could mop up viruses in humans – including the one that causes COVID-19
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Curious Kids: Do dogs really see in just black and white?
Child wearing glass with head tilted in an inquisitive pose in front of a chalkboard with colorful images
Curious Kids: What is the slowest thing on Earth?
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Physicists hunt for room-temperature superconductors that could revolutionize the world's energy system
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What is the summer solstice? An astronomer explains
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Curious Kids: What is the 'zero gravity' that people experience in the vomit comet or space flight?
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Curious Kids: What makes something smell good or bad?
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Compare the flu pandemic of 1918 and COVID-19 with caution – the past is not a prediction
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Tiny plankton drive processes in the ocean that capture twice as much carbon as scientists thought
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Curious Kids: What makes the wind?
Child wearing glass with head tilted in an inquisitive pose in front of a chalkboard with colorful images
Curious Kids: How could an explosive Big Bang be the birth of our universe?
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Vaccines without needles – new shelf-stable film could revolutionize how medicines are distributed worldwide
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Katherine Johnson: NASA mathematician and much-needed role model
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Curious Kids: How did I get my own unique set of fingerprints?
Child wearing glass with head tilted in an inquisitive pose in front of a chalkboard with colorful images
Curious Kids: What is white-nose syndrome in bats?
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Coronavirus grown in lab outside China for first time, aiding the search for vaccine
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Atmospheric river storms can drive costly flooding – and climate change is making them stronger
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How to make the perfect cup of coffee – with a little help from science
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Curious Kids: Why do onions make you cry?
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Prairie strips now part of the Conservation Reserve Program
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Research on how self-control works could help you stick with New Year's resolutions
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