News
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SpaceA planet needs to start with a lot of water to become like Earth
Rocky planets around fiery stars could hide their water for later use, but it takes 3 to 8 times the amount in our world’s oceans to end up Earthlike.
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PhysicsCan light spark superconductivity? A new study reignites debate
Brief blasts of light might make some materials into fleeting superconductors. Magnetic measurements strengthen the case for this controversial claim.
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Health & MedicineHow to stay healthy during the COVID-19 summertime surge
Infections peak in the summer and winter. Up-to-date vaccinations, testing and masking can slow the spread.