From the ground breaking and life saving to the wacky and implausible, Dr Karl Kruszelnicki reveals some of the best moments in science.
Brain hotter than body
The highest standard for measuring body temperature is via a heart sensor—after that, it's from inside a body cavity; and you can do it from inside the mouth or the ear, but that's not as accurate, and even less so when measured on the skin. Measuring brain temperature is different again—and be astonished that the temperature of the human brain differs from the rest of the body.
What happens when you get winded?
Have you ever been winded? You suddenly lose the ability to do something you've done 15 times each minute of your life. It's one part anatomy, one part physiology, and one part don't panic.
Dogs tilt their heads
Dogs tend to hang around humans but do they really love us—and what’s with the head tilt? Their affability might be due to two genes known to influence sociability in mammals. Gradually genetics turned dogs and humans into best friends.
Measles erases immune system memory
Measles is a nasty infection that you don't want to get. It can cause death and, what's more, it can also erase your immune system's memory. Only relatively recently scientists have measured this directly - by concentrating on antibodies – which can be generated by natural infection, and by vaccines.
Anticipation is a strange experience. It can take you all the way from hope and trust, to anxiety and fear. But there’s a happy balancing point where anticipation can enrich your life.
Who’d’ve thought that one of the most sober animals is the humble hamster. They love alcohol but it doesn’t affect them. And who’d’ve thought that there’s a way to measure inebriation levels in animals - it’s called the Wobbling Scale – but hamsters NEVER wobble.
Interesting topics that make you think.
Interesting topics that make you think. Good audio quality. Nice short but fun podcasts.
Dr. Karl always does a terrific job. Thanks for the great work.
Dr. Karl - He's the best.
Having moved from Australia to the USA one thing I missed was Dr Karl. His books are great, and these podcasts are awesome. So glad I can get my Dr. Karl fix here in the US without having to deal with streaming audio!!!