The 3.5% solution.

In a scathing letter, the White House says it refuses to participate in the House impeachment inquiry, a move Pelosi calls "further evidence of obstruction." 1/23

A GOP-led Senate committee calls for congressional action to ensure social media isn't used to interfere in the 2020 presidential election. 2/23

Citing its "fundamental belief in free expression," Facebook won't take down a Trump campaign ad falsely accusing Biden of influencing Ukraine policy for personal gain. 3/23

Security officials warn that an elite group within Russian intelligence is actively working to destabilize Europe. 4/23

With her gold medal at the gymnastics world championships, Simone Biles has become the most-medaled woman in gymnastics history. 5/23

"For the first time on record, the 400 wealthiest Americans last year paid a lower total tax rate than any other income group." 6/23

"The steps of the income ladder are too far apart for kids to climb them." Billionaires are destroying America's social fabric. Taxation can de-incentivize accumulating that wealth in the first place. 7/23

The Green New Deal may be divisive, but voters support aggressive climate policies. 8/23

Extinction Rebellion's strategy is to mobilize 3.5% of a country's population—a proven threshold for political change. 9/23

"We kill each other, and you send the bullets." Cheap, high-powered American firearms and ammunition find their way to Mexico. 10/23

Astronomers have discovered 20 new moons orbiting Saturn—bringing its total to 82 moons, surpassing Jupiter's 79. 11/23

Here are the 2019 National Book Awards finalists. 12/23

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Paranoid insurance tycoon maintains a fleet of undercover investigators to research and track potential romantic "interests." 13/23

Bullying physically changes victims' brains, reducing the volume of regions involved in movement and learning. 14/23

How an e-cyclist was banned from racing after using a "Tron" concept bike acquired through allegedly nefarious means. 15/23

MIT engineers build a mathematical model for oobleck to gauge how the non-Newtonian fluid might be used in industry. 16/23

"It should have just three ingredients: corn, cal, and water." Bringing traditional, nixtamalized tortillas to more Americans. 17/23

A fascinating new method of concealing a message in plain sight: hiding images in highlighted text. 18/23

At this moment, you cannot avoid seeing merchandise with variations on the Friends logo. 19/23

If Spotify follows Tencent's lead, users may soon see new releases restricted to premium subscribers. 20/23

Beyond Cage's "4'33," a guide to classical compositions that use silence. 21/23

Watch: A video of the streets of New York, reimagined by AI in a cubist style. 22/23

Illustrations of homes nestled in the rough-hewn landscape of the American West, by Ken Price. 23/23

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