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Iceland Says It Is No Longer Mosquito-Free

Iceland was one of the only mosquito-free places in the world, at least according to its records. Not anymore.

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How Testosterone Is Giving Middle-Aged Women the Best Sex of Their Lives

There is no F.D.A.-approved testosterone product for women. Insurance won’t cover it. Many doctors won’t prescribe it. It’s become a cultural phenomenon.

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On the Menu in New York: One Repair, Coming Right Up

Monthly “repair cafes” aim to bring neighbors together while keeping all manner of items out of the trash.

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What Does an Ant Smell Like? Find Out at This Museum.

A new exhibition at the Bruce Museum in Greenwich, Conn., gives visitors a whiff, from “chocolate-y” to stinky blue cheese.

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How to See the Orionids Meteor Shower: Best Time to Watch

The shower is produced by Halley’s comet’s debris, and could offer strong viewing opportunities because the moon is new this week.

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George F. Smoot, Who Showed How the Cosmos Began, Is Dead at 80

He led a team of scientists who helped confirm that a Big Bang was the source of the universe. The discovery earned him a Nobel Prize.

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With SpaceX Behind Schedule, NASA Will Seek More Moon Lander Ideas

Blue Origin, owned by Jeff Bezos, and Lockheed Martin are among the contractors that may compete with Elon Musk’s company in the race back to the lunar surface.

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Vision Restored Using Prosthetic Retinal Implant

The device could help a million people with a severe form of macular degeneration to be able to see enough to read.

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The Government Is Shut Down. But Not for Fossil Fuels.

Federal workers who issue permits for oil, gas and mining operations are on the job, along with those working to repeal pollution limits.

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The Kids Who Sued Trump Just Lost Big in Court. Or Did They?

A federal judge threw out their climate lawsuit against the president a few days ago. But legal experts say there was a silver lining in the judge’s opinion.

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