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Debris From SpaceX Explosion, Landing in Mexico, Draws Investigation

The World Is Warming Up. And It’s Happening Faster.

Republicans Propose a New Way to Scrap Fuel Economy Rules: No Fines

How Two Neuroscientists View Optical Illusions

Here’s Another Use for Ice: Creating Secret Codes

Grand Jury Indicts Russian Scientist on Smuggling Charges

N.I.H. Memo Pauses Cancellations of Medical Research Grants

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Scientists Retrace 30,000-Year-Old Sea Voyage, in a Hollowed-Out Log

Kennedy Accuses International Vaccine Agency of Ignoring Science