Quirks and Quarks

Jan 4: The Annual Quirks & Quarks Holiday Question Show

We've got answers to your questions like: do redheads feel more pain? Do we catch colds by being cold? Could Neanderthals speak? How is the universe expanding while galaxies are colliding? Why do dogs sniff and lick each other's butts? And more!

We answer your burning science questions, like why do dogs lick butts and could Neanderthals speak?

An illustration of Bob McDonald surrounded by raised hands. A calendar flips to 2025 in the corner.
Bob McDonald is back with science experts to answer all our listener's burning questions. (Ben Shannon/CBC)

Our holiday gifts to our listeners are answers for all their wacky but fascinating science questions, like:

Genevieve Willis from London ON asks: Is there any evidence to suggest that "getting cold" by, say, dressing inadequately in cold weather, or sitting in a cold draft, actually increases our susceptibility to illness?
For the frigid answer, we spoke with Michael Kennedy who is an associate professor of exercise physiology at the University of Alberta. 

Jim Raso from St. Albert AB wrote us: As I have gotten older—I am 73 now—I notice that time seemed to pass more quickly. Why does this happen?
For the answer, we asked Holly K. Andersen, a professor of philosophy at Simon Fraser University in Burnaby, British Columbia.

Dan from Chateau-Richer QB writes: Where does moon dust come from?
We reached out to planetary geologist Gordon Osinski, a professor of Earth Sciences at Western University, who has studied samples sent back from the Apollo missions. 

A black and white photo looking down at a foot in a boot standing on a thick pad of sandy soil.
Astronauts took this photo of the lunar soil on the Apollo 11 mission in 1969. (AFP/NASA/AFP via Getty Images)

Scott Beach from East York ON asks: Why do dogs sniff and lick each other's butts?
To get the answer, we reached out to Simon Gadbois, the principal investigator at the Canine olfaction lab at Dalhousie University.

Robert Smith from Victoria BC asks: Is there evidence to suggest red-heads are particularly sensitive to pain? 
To find out, we spoke with someone who has studied this in the past: Jeffrey Mogil, the E.P. Taylor Professor of Pain Studies at the Alan Edwards Centre for Research on Pain at McGill University.

Stephen Quinn from St. John's NF asks: How can the universe be expanding at the same time as galaxies are colliding?
For the smashing answer, we spoke with Sara Ellison, a professor of physics and astronomy at the University of Victoria. 

The galaxy on the left looks like it’s pulling the galaxy on the right in, producing a rough triangle on the right of pink and many blue stars.
Two galaxies collide in this Hubble Space Telescope image, fueling a frenzy of star birth that produced this unusual triangle of young, blue stars. (Julianne Dalcanton/Center for Computational Astrophysics/Flatiron Inst./University of Washington/Joseph DePasquale/STScI/NASA/ESA)

Susan Boyd from Ottawa ON asks: Since some of the elements in the periodic table do not occur naturally, is there a limit to the new elements that could be created? 
We went to the National Research Council Canada's element expert, Juris Meija, for this answer. 

Robert LaRoche in Halifax NS asks: Why is the colour of wet clothes always more vivid than when they are dry?
For the answer, we turned to Sarah Purdy, a Physicist at the University of Saskatchewan who uses light to investigate materials. 

A man stands with his back to the camera, his suit jacket is drenched at his shoulders.
Wet clothes can look darker than dry clothes because the water trapped in tiny crevasses can affect how the light reflects back out. (Christopher Furlong/Getty Images)

Paul Vander Griendt of Newmarket ON asks: If animals wake up at sunrise and go to sleep at sunset, how do they cope with the varying hours of sunlight?
For the answer we turned to Ming Fei Li a Phd candidate at the University of Toronto in Anthropology who is studying the sleep patterns of animals. 

Marie Beaudoin from Salt Spring Island BC asks: How do birds where the males and females look the same tell each other apart when it comes to mating?" 
We went to Matt Reudinik, a professor of biology at Thompson Rivers University in Kamloops, BC, for the answer. 

Warren Saylor of London ON asks: Could Neanderthals speak? If they could not, would that contribute to the dominance of Homo Sapiens?
We spoke to paleoanthropologist Bence Viola, an associate professor in the department of Anthropology at the University of Toronto.

Neanderthal
Guido Camia, dressed as a Neanderthal, teaches primitive survival skills in the Italian Alps. (MARCO BERTORELLO/AFP via Getty Images)