Posted inNPR

An icy mystery: What are lake stars?

When producer Berly McCoy was out on her local frozen lake, she saw something she’d never seen before. There were dark spidery, star-shaped patterns in the ice and they freaked her out. So, we called an expert to find out more about them. In today’s episode, geophysicist Victor Tsai tells us about lake stars and how he became the first person to scientifically prove how they form. Plus, he explains how knowing more about lake stars can potentially give us clues about the presence of water on Europa, one of Jupiter’s icy moons.

Read Victor Tsai’s full paper on lake stars here.

Have a question about something in the environment? Email us at shortwave@npr.org.

Listen to every episode of Short Wave sponsor-free and support our work at NPR by signing up for Short Wave+ at plus.npr.org/shortwave.

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‘We the Women’ and ‘Rise, Girl, Rise’ are stories about revolutionary women

To mark Women’s History Month, today’s episode features new books focused on women who have paved the way for gender equality. First, journalist Norah O’Donnell documents untold stories in American history in We the Women, written in collaboration with Kate Andersen Brower. In today’s episode, O’Donnell tells NPR’s Mary Louise Kelly about lesser-known female heroes, like the woman who printed the Declaration of Independence and a female soldier who fought in the American Revolution. Then, activist Gloria Steinem and Nobel Peace Laureate Leymah Gbowee speak with Here & Now’s Indira Lakshmanan about their new children’s book, Rise, Girl, Rise.

To listen to Book of the Day sponsor-free and support NPR’s book coverage, sign up for Book of the Day+ at plus.npr.org/bookoftheday

Posted inNPR

A lot of gas trapped, oil reserves tapped, and Live Nation gets a (tiny) cap

It’s  Indicators of the Week (now on YouTube!), our weekly look at some of the most fascinating economic numbers from the news. 

On today’s episode: How big is this gas crisis  and could releasing oil reserves help? Also, Live Nation gets a deal from the government.  

Related episodes: 
Are concert tickets UNDER priced? 
Will Trump’s shipping insurance plan work? 

For sponsor-free episodes of The Indicator from Planet Money, subscribe to Planet Money+ via Apple Podcasts or at plus.npr.org. Fact-checking by Julia Ritchey and Corey Bridges. Music by Drop Electric. Find us: TikTok, Instagram, Facebook, Newsletter 

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