On Today's Podcast

Should Pluto be a planet again?

NASA's administrator wants to reclassify Pluto as a planet, reigniting a 20-year controversy over its status in our solar system.

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Today's Broadcast

April 3, 2026

The Artemis II mission has launched, and its four astronauts are en route to the moon for a lunar flyby. Plus, one scientist wants to put bioengineered algae to work cleaning microplastics out of wastewater. And, you probably shouldn’t spend time on your phone while you’re on the toilet, and other pooping tips from a gastroenterologist.

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Video

When Water Flows Uphill

In the Leidenfrost Effect, a water droplet will float on a layer its own vapor if heated to certain temperature—and these physicists discovered a new means of manipulating the hot droplets.

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