One million ways to sex a chicken egg, and how plastic finds its way to Arctic ice

One million ways to sex a chicken egg, and how plastic finds its way to Arctic ice

Researchers, regulators, and the chicken industry are all united in their search for a way to make eggs more ethical by stopping culling—the killing of male chicks born to laying hens. Contributing Correspondent Gretchen Vogel talks with host Sarah Crespi about the many approaches being tried to determine the sex of chicken embryos before they hatch, from robots with lasers, to MRIs, to artificial intelligence, to gene editing with CRISPR. Also this week, Sarah talks with Melanie Bergmann, a marine biologist at the Alfred Wegener Institute for Polar and Marine Research in Bremerhaven, Germany, about finding microplastic particles in snow all the way up at the Fram Strait, between Greenland and the Svalbarg archipelago in Norway. This week’s episode was edited by Podigy. Download a transcript (PDF) Ads on this week’s show: Science Sessions podcast; National Highway Traffic Safety Administration Listen to previous podcasts. About the Science Podcast [Image: fruchtzwerg’s world/Flickr; Music: Jeffrey Cook] Learn more about your ad choices. Visit megaphone.fm/adchoices

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Death in a gene-editing trial, and insect larvae surviving in deep waters

Death in a gene-editing trial, and insect larvae surviving in deep waters

First up on the podcast, freelance science journalist Brendan Borrell talks about his work reporting on the previously undisclosed death of a 6-year-old girl in a gene-editing clinical trial in China ...

23 Juli 37min

Health care in Malawi after USAID’s end, and a rocky exoplanet with an atmosphere

Health care in Malawi after USAID’s end, and a rocky exoplanet with an atmosphere

First up on the podcast, we continue our coverage of the fallout from cuts to the U.S. Agency for International Development (USAID), this time focusing on how one of the largest recipients of aid is c...

16 Juli 41min

Owl wars and the immune system’s memory

Owl wars and the immune system’s memory

First up on the podcast, Contributing Correspondent Warren Cornwall goes on an owl hunt in the woods of Northern California. After surviving logging and habitat destruction in the 1990s, the endangere...

9 Juli 35min

How Antarctica got its ice sheets, and what happens when geopolitical relationships turn chilly in the Arctic

How Antarctica got its ice sheets, and what happens when geopolitical relationships turn chilly in the Arctic

First up on the podcast, relationships turn chilly in the polar research haven of Svalbard in Norway. Senior International Correspondent Richard Stone joins host Sarah Crespi to discuss the impacts of...

2 Juli 32min

Cracking color vision, U.S. science policy changes, and a trailblazing biography

Cracking color vision, U.S. science policy changes, and a trailblazing biography

First up on the podcast, ScienceInsider editor Jocelyn Kaiser joins host Sarah Crespi to discuss big policy stories from the past month, including a proposal from President Donald Trump’s administrati...

25 Juni 45min

An electronic nose that detects spoiled chicken, and wolves make a spectacular comeback in Europe

An electronic nose that detects spoiled chicken, and wolves make a spectacular comeback in Europe

First up on the podcast, wrangling wolves in Europe. After near extermination in much of the continent, wolf numbers have surged up to about 20,000 individuals. Contributing Correspondent Gretchen Vog...

18 Juni 46min

How childhood environments shape the brain, and how susceptible is the Atlantic Ocean’s current to climate change?

How childhood environments shape the brain, and how susceptible is the Atlantic Ocean’s current to climate change?

First up on the podcast, producer Kevin McLean talks with Staff Writer Paul Voosen about the latest on the Atlantic Meridional Overturning Circulation, or AMOC. Researchers have long been concerned th...

11 Juni 31min

Will AI replace astronomers, how healthy are ultraprocessed foods, and a peek behind the scenes of ‘The Normals’

Will AI replace astronomers, how healthy are ultraprocessed foods, and a peek behind the scenes of ‘The Normals’

First up on the podcast, freelance science journalist Joshua Sokol talks about the intense discussion happening in the astrophysics community as artificial intelligence and machine learning become inc...

4 Juni 50min

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