Listening in on fish grunts, and more…
5/22/202654 min
Scientists recorded audio and video of 8 different kinds of rockfish living in the wild near British Columbia, and were surprised they could tell the species apart through their various grunts, pops and knocks, even though the fish are closely related.
PLUS:
- DNA identifies four Franklin Expedition sailors — and solves a 160-year-old mystery
- Immune cells that fight infection get a boost from food
- Radio waves let us see the unseeable: black holes, pulsars and volcanoes on Venus
- From the archives: What will the Earth look like in 2050?
- Quirks Question: If chicken and fish blood is red, why are they white meats?
Clips
Transcript preview
First 90 secondsSpeaker 10:00
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Speaker 20:28
[upbeat jingle] This is a CBC podcast.
Bob McDonald· Host0:32
[upbeat music] Hi, I'm Bob McDonald. Welcome to Quirks & Quarks. On this week's show, how your immune system fights its best fight after a good meal.
Greg Delgoffe· Guest0:45
Napoleon famously said, "An army marches on its stomach," which is you have to feed your troops, right? And that is absolutely that we found in the immune system.
Bob McDonald· Host0:54
And eavesdropping on rockfish to tell one type from another.
Darien Lancaster· Guest0:58
It sounds like this croaking, grunting. It's kind of like a rrr sound, and, uh, it's the most unique, and every time I hear it, it makes me laugh.
Bob McDonald· Host1:08
Plus, DNA matches from the doomed Franklin expedition, an archival interview on climate change, a question about red blood and white meat, and how radio waves have allowed us to see the universe with different eyes. All this today on Quirks & Quarks. 180 years ago, British explorer