Quirks and Quarks

Scientists spent nearly 25 years studying close to 800 polar bears in the Barents Sea region and discovered that those polar bears seem to be doing just fine, even though melting sea ice is also a major issue.

PLUS:

Sargassum seaweed is becoming such a problem, you can see it from space
Why some people only get mild sniffles with a cold and others get sick
A woolly rhino's DNA found in an ancient wolf’s stomach reveals their quick demise
How to change a memory — one scientist's quest to understand memory permanence

Some dogs are more adept at learning language than others. Researchers studying these special dogs discovered that, much like toddlers, these smart furry canine companions can pick up words just by eavesdropping on their owners' conversations.

PLUS

Tracking space debris using seismometers
Using nitrogen to boost trees
How Mars shapes our climate
Extracting ice age mammoth RNA and using lichens to find dino bones

We may share a common ancestor with chimpanzees, but somewhere along the evolutionary line to us, our brains took a major detour. New research suggests that chimpanzees can rationally weigh evidence, a trait that used to be thought as uniquely human.

PLUS:

Why penguin-eating pumas live closer together in Patagonia
Ants sacrifice the strength of individual workers for quantity
Mapping the landmass beneath Antarctica's massive ice sheet
How deep sea ocean environments affect fish body shape

An unassuming fossilized slab in the basement of a museum in Brazil turned out to be 110-million-year-old dinosaur vomit, and inside that vomit were the bones of two strange, seagull-sized pterosaurs.

PLUS:
Loss of fresh groundwater is now the leading driver of sea level rise
How doubting your self-doubt makes you doubt less
A huge black hole in a peculiar galaxy may date from the universe’s earliest moments
Shining a light on where viruses hide out in our bodies, and how they make us sick

On this week’s episode of Quirks & Quarks, it's our ever-popular and always satisfying Holiday Listener Question Show that includes:

Why did a Canadian astronaut's eyesight change when she went to space?
How is the dust inside our homes changing?
Why do some professional athletes stick out their tongues when they play?
Why are most fruits round, but bananas and pineapple are not?
What would have happened if the dino-killing asteroid never struck Earth?

We'll satisfy all these scientific curiosities and many more!