Do Hairs Know They've Been Cut?
A special question and answer edition of the show where the team get to grips with your queries, including, do hairs know they've cut? Is someone who sweats sooner fitter? How do noise-cancelling headphones work? How do we know what's inside Earth? Why are there no whale-sized insects? Does protein suppress appetite? And could there be a planet with a green atmosphere?
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I have a question about body hair.
When we remove unwanted body hair by plucking/shaving, we know that they grow back more or less to its natural length.
When we trim them, the hair also seem to grow back to its natural length, but this has mystified me for some ...
If you leave a drink with ice in it out in the sun will the volume of liquid go up, down or remain the same?
Who is more fit: the person who starts sweating as soon as they begin to exercise, or the person who barely breaks a sweat? The former may be thermo-regulating better than the latter, but the latter would seem to be unaffected by the exercise?
I was saddened to hear the news earlier that the comedian, Mel Smith, has died of a heart attack aged just 60. I was also a little concerned at his passing as I am reckoned to be one of those in the high-risk category.
I watched an interesting documentary in the Horizon series...
As ships, such as Victory, fired their canons, the ship must have got lighter. I wonder how they compensated for this ?
The ship would now rise above the intended water line ? Did they take in water as ballast after firing many canon balls ? Or maybe the loss of weight did no...
If tyres wear on roads and roads wear with traffic, where does all this stuff go?
With hundreds of daddy longlegs filling the air in Cambridge we wanted to find out why there are so many around
I have wondered if the geological, tectonic subduction of nuclear waste materials might be a practical way to permanently remove these dangerous substances from the earth's surface and at the same time to feed the Earth's magnetic field. Is anyone working on the development of su...
Really enjoy your programme.
Why don't we see insects as large as whales or cows ? Why is the ratio of largest to smallest so much bigger for mammals (blue whale vs kitti's hog nosed bat) than it is for insects (goliath beetle vs fairy fly) ?
Scientists have recently discovered the Pandora viruses. It was said they could possibly suggest a fourth domain of life. I was wondering what the implications of these viruses could be and how could we use them?
I read somewhere that it was discovered that the inner core of the earth was solid because shear waves had passed through it and they can't pass through a liquid.
Since the inner core is solid and the outer core is liquid, how did the shear waves pass through the outer liquid...
We're told that the rods and cones in ones retina are sensitive to red, green and blue. Why not red, yellow and blue the three primary colours? It seems more logical to me.
If the world is a globe, why is it that people in eg Australia do not feel they are upside down?
Is there a safe tablet a person can take to increase the melanin in your skin to increase a tanned look.
I am a physics and astronomy lecturer at the University of New Mexico and students in my introductory astronomy class have the following question. Could a planet have a green atmosphere and if so, what gases would it consist of?
I am a longtime listener and download your podca...
Noise cancelling headphones - if energy can't be destroyed are we hearing the same pressure of noise silently?
How do grown up cells know what they're going to be? How do brain cells know that they're going to be grown up and in my brain?