Counting research rodents, a possible cause for irritable bowel syndrome, and spitting cobras

Counting research rodents, a possible cause for irritable bowel syndrome, and spitting cobras

Online News Editor David Grimm joins host Sarah Crespi to discuss a controversial new paper that estimates how many rodents are used in research in the United States each year. Though there is no official number, the paper suggests there might be more than 100 million rats and mice housed in research facilities in the country—doubling or even tripling some earlier estimates. Next, Staff Writer Jennifer Couzin-Frankel talks with Sarah about a new theory behind the cause of irritable bowel syndrome—that it might be a localized allergic reaction in the gut. Sarah also chats with Taline Kazandjian, a postdoctoral research associate at the Centre for Snakebite Research & Interventions in Liverpool, U.K., about how the venom from spitting cobras has evolved to cause maximum pain and why these snakes might have developed the same defense mechanism three different times. This week’s episode was produced with help from Podigy. Listen to previous podcasts About the Science Podcast Download a transcript (PDF) [Image: Rushen/Flickr; Music: Jeffrey Cook] Authors: Sarah Crespi; David Grimm; Jennifer Couzin-Frankel Learn more about your ad choices. Visit megaphone.fm/adchoices

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Episoder(642)

Sexual trait evolution in mosquitoes and a news roundup

Sexual trait evolution in mosquitoes and a news roundup

Sara Mitchell discusses the co-evolution of sexual traits in mosquitoes and their influence on malaria transmission. David Grimm discusses daily news stories. Hosted by Susanne Bard. [Img: © Sam Cotto...

26 Feb 201525min

Maternal effects in songbirds and a news roundup

Maternal effects in songbirds and a news roundup

Renée Duckworth discusses the role of maternal effects on species replacement in ecological communities shaped by forest fires. David Grimm discusses daily news stories. Hosted by Susanne Bard. [Img: ...

19 Feb 201517min

The planetary boundaries framework, marine debris, and a news roundup

The planetary boundaries framework, marine debris, and a news roundup

Will Steffen discusses the processes that define the planetary boundaries framework: a safe operating space within which humanity can still thrive on earth. Jenna Jambeck examines the factors influenc...

12 Feb 201529min

Spatial neurons and a news roundup

Spatial neurons and a news roundup

Gyorgy Buzsáki discusses how two types of neurons in the brain's hippocampus work together to map an animal's environment. David Grimm discusses daily news stories. Hosted by Susanne Bard. [Img: © Isa...

5 Feb 201520min

Mathematicians and the NSA and a news roundup

Mathematicians and the NSA and a news roundup

John Bohannon discusses the growing rift between mathematicians and the National Security Agency following Edward Snowden's 2013 revelations of massive eavesdropping on U.S. citizens. David Grimm disc...

29 Jan 201526min

How comets change seasonally and a news roundup

How comets change seasonally and a news roundup

Myrtha Hässig discusses variability and heterogeneity of the coma of comet 67P as part of Science's special issue on the Rosetta spacecraft. Meghna Sachdev discusses daily news stories. Hosted by Susa...

22 Jan 201517min

High-altitude bird migration and a news roundup

High-altitude bird migration and a news roundup

Charles Bishop discusses the "roller-coaster" flight strategy of bar-headed geese as they migrate across the Himalayas between their breeding and wintering grounds. Online news editor David Grimm disc...

15 Jan 201526min

Deworming buffalo and a news roundup

Deworming buffalo and a news roundup

Vanessa Ezenwa discusses the complex relationship between parasitic infections and tuberculosis in African buffalo and what it can tell us about human health. Online news editor David Grimm dicusses c...

8 Jan 201519min

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