Should we prioritize which endangered species to save, and why were chemists baffled by soot for so long?

Should we prioritize which endangered species to save, and why were chemists baffled by soot for so long?

We are in the middle of what some scientists are calling the sixth mass extinction and not all at-risk species can be saved. That’s causing some conservationists to say we need to start thinking about “species triage.” Meagan Cantwell interviews freelance journalist Warren Cornwall about his story on weighing the costs of saving Canada’s endangered caribou and the debate among conservationists on new approaches to conservation. And host Sarah Crespi interviews Hope Michelsen, a staff scientist at Sandia National Laboratories in Livermore, California, about mysterious origins of soot. The black dust has been around since fire itself, but researchers never knew how the high-energy environment of a flame can produce it—until now. Michelsen walks Sarah through the radical chemistry of soot formation—including its formation of free radicals—and discusses soot’s many roles in industry, the environment, and even interstellar space. Check out this useful graphic describing the soot inception process in the related commentary article. This week’s episode was edited by Podigy. Download a transcript of this episode (PDF) Listen to previous podcasts. About the Science Podcast [Image: Darren Bertram/Flickr; Music: Jeffrey Cook] Learn more about your ad choices. Visit megaphone.fm/adchoices

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Episoder(652)

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 Jul 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 Jul 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 Jul 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 Jul 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 Jun 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 Jun 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 Jun 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 Jun 50min

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