Why the platypus gave up suckling, and how gravity waves clear clouds

Why the platypus gave up suckling, and how gravity waves clear clouds

Suckling mothers milk is a pretty basic feature of being a mammal. Humans do it. Possums do it. But monotremes such as the platypus and echidna—although still mammals—gave up suckling long ago. Instead, they lap at milky patches on their mothers’ skin to get early sustenance. Science News Writer Gretchen Vogel talks with host Sarah Crespi about the newest suckling science—it turns out monotremes probably had suckling ancestors, but gave it up for the ability to grind up tasty, hard-shelled, river-dwelling creatures. Sarah also talks with Sandra Yuter of North Carolina State University in Raleigh about her work on fast-clearing clouds off the southwest coast of Africa. These immense marine layers appear to be exiting the coastal regions under the influence of gravity waves (not to be confused with gravitational waves). This finding can help scientists better model cloud behavior, particularly with respect to their influence on global temperatures. This week’s episode was edited by Podigy. Download a transcript of this episode (PDF) Listen to previous podcasts. [Image: North Carolina State University] Learn more about your ad choices. Visit megaphone.fm/adchoices

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The Normals | Episode 1

The Normals | Episode 1

How do we know what's normal in a person? In the early 1950s, the National Institutes of Health (NIH) set out to do something unprecedented. It wanted to start studying normal humans on a grand scale....

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Resolving the dispute over the speed of the expanding universe, and seeking new drug targets for cognitive dysfunction

Resolving the dispute over the speed of the expanding universe, and seeking new drug targets for cognitive dysfunction

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First up on the podcast, we discuss a finding that’s likely to reignite debate over how humans first spread through the Americas. In the late 1990s, a site in southern Chile called Monte Verde forced ...

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First up on the podcast, freelance journalist Evan Howell traveled to Cape Blossom, Alaska, where the receding coastline has revealed an ancient trove of glacial ice that may have survived for 350,000...

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First up on the podcast, a peek into the roiling seas of U.S. science policy. ScienceInsider Editor Jocelyn Kaiser talks about shifting leadership at the National Science Foundation and the Cente...

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First up on the podcast, producer Meagan Cantwell talks to Contributing Correspondent Warren Cornwall about his visit to Brazil, where he observed firsthand what it takes for researchers to understand...

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Matching sounds to shapes, and stories from the AAAS annual meeting

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First up on the podcast, Newsletter Editor Christie Wilcox, Associate Online News Editor Michael Greshko, and intern Perri Thaler share their experiences from the AAAS annual meeting in Phoenix. Chri...

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