How humans survived an ancient volcanic winter and how disgust shapes ecosystems

How humans survived an ancient volcanic winter and how disgust shapes ecosystems

When Indonesia’s Mount Toba blew its top some 74,000 years ago, an apocalyptic scenario ensued: Tons of ash and debris entered the atmosphere, coating the planet in ash for 2 weeks straight and sending global temperatures plummeting. Despite the worldwide destruction, humans survived. Sarah Crespi talks with Online News Editor Catherine Matacic about how life after Toba was even possible—were humans decimated, or did they rally in the face of a suddenly extra hostile planet? Next, Julia Buck of the University of California, Santa Barbara, joins Sarah to discuss her Science commentary piece on landscapes of disgust. You may have heard of a landscape of fear—how a predator can influence an ecosystem not just by eating its prey, but also by introducing fear into the system, changing the behavior of many organisms. Buck and colleagues write about how disgust can operate in a similar way: Animals protect themselves from parasites and infection by avoiding disgusting things such as dead animals of the same species or those with disease. This week’s episode was edited by Podigy. Listen to previous podcasts. [Image: Emma Forsber/Flickr; Music: Jeffrey Cook] Learn more about your ad choices. Visit megaphone.fm/adchoices

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New insights into endometriosis, and mapping dengue in Latin America

New insights into endometriosis, and mapping dengue in Latin America

First up on the podcast, Staff Writer Meredith Wadman joins host Sarah Crespi to discuss recent advances in understanding endometriosis—a disease where tissue that resembles the lining of the uterus g...

21 Elo 202532min

Why chatbots lie, and can synthetic organs and AI replace animal testing?

Why chatbots lie, and can synthetic organs and AI replace animal testing?

First up on the podcast, producer Meagan Cantwell and Contributing Correspondent Sara Reardon discuss alternative approaches to animal testing, from a heart on a chip to a miniorgan in a dish.   Ne...

14 Elo 202531min

Why anteaters keep evolving, and how giant whales get enough food to live

Why anteaters keep evolving, and how giant whales get enough food to live

First up on the podcast, Online News Editor David Grimm brings stories on peacock feathers’ ability to emit laser light, how anteaters have evolved at least 12 times, and why we should be thanking ket...

7 Elo 202528min

Wartime science in Ukraine, what Neanderthals really ate, and visiting the city of the dead

Wartime science in Ukraine, what Neanderthals really ate, and visiting the city of the dead

First up on the podcast, Contributing Correspondent Richard Stone joins host Sarah Crespi to talk about the toll of the ongoing conflict in Ukraine and how researchers have been mobilized to help the ...

31 Heinä 202551min

Robots that eat other robots, and an ancient hot spot of early human relatives

Robots that eat other robots, and an ancient hot spot of early human relatives

First up on the podcast, South Africa’s Cradle of Humankind is home to the world’s greatest concentration of ancestral human remains, including our own genus, Homo, Australopithecus, and a more robust...

24 Heinä 202534min

Studying a shark-haunted island, and upgrading our microbiomes with engineered bacteria

Studying a shark-haunted island, and upgrading our microbiomes with engineered bacteria

First up on the podcast, Réunion Island had a shark attack crisis in 2011 and closed its beaches for more than a decade. Former News Intern Alexa Robles-Gil joins host Sarah Crespi to talk about how r...

17 Heinä 202536min

A tardi party for the ScienceAdviser newsletter, and sled dog genomes

A tardi party for the ScienceAdviser newsletter, and sled dog genomes

First up on the podcast, Newsletter Editor Christie Wilcox joins host Sarah Crespi to celebrate the 2-year anniversary of ScienceAdviser with many stories about the amazing water bear. They also discu...

10 Heinä 202525min

Losing years of progress against HIV, and farming plastic on Mars

Losing years of progress against HIV, and farming plastic on Mars

First up on the podcast, U.S. aid helped two African countries rein in HIV. Then came President Donald Trump. Senior News Correspondent Jon Cohen talks with producer Kevin McLean about how in Lesotho ...

3 Heinä 202531min

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