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

Tämä jakso on lisätty Podme-palveluun avoimen RSS-syötteen kautta eikä se ole Podmen omaa tuotantoa. Siksi jakso saattaa sisältää mainontaa.

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Hunting ancient viruses in the Arctic, and how ants build their nests to fight disease

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How birds reacted to a solar eclipse, and keeping wildfire smoke out of wine 

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A new generation of radiotherapies for cancer, and why we sigh

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Salty permafrost’s role in Arctic melting, the promise of continuous protein monitoring, and death in the ancient world

Salty permafrost’s role in Arctic melting, the promise of continuous protein monitoring, and death in the ancient world

First up on the podcast, Science News Editor Tim Appenzeller joins host Sarah Crespi to discuss why a salty layer of permafrost undergirding Arctic ice is turning frozen landscapes into boggy morasses...

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Protecting newborns from an invisible killer, the rise of drones for farming, and a Druid mystery

Protecting newborns from an invisible killer, the rise of drones for farming, and a Druid mystery

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An aggressive cancer’s loophole, and a massive field of hydrogen beneath the ocean floor

An aggressive cancer’s loophole, and a massive field of hydrogen beneath the ocean floor

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Finding HIV’s last bastion in the body, and playing the violin like a cricket

Finding HIV’s last bastion in the body, and playing the violin like a cricket

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