Question of the Week - From the Naked Scientists

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Episodes

Date Title & Description Contributors
2024-12-13

  Can we harness nuclear energy without steam?

Dave writes in wanting to know whether there is any way to get nuclear energy onto the grid without heating up water to turn a steam turbine. A great question that sees James Tytko dip his toe into the uranium heated waters of nuclear engineering... Li...
  Dr Chris Smith author
2024-12-06

  How long does it take to create a galaxy?

David wants to know, after looking at distant galaxies in the night sky, how long it took to create them. James Tytko took on the question with the help of the University of Cambridge's Public Astronomer, Matt Bothwell... Like this podcast? Please help...
  Dr Chris Smith author
2024-11-29

  How do parasites know they are in the right place?

Parasites have to come up with all sorts of tricks to evade the immune system of their hosts. But Kate wants to know, how do they know they've found the right place? James Tytko took her question on with help from Catherine Merrick, professor of parisi...
  Dr Chris Smith author
2024-11-22

  Why are plane and boat propellers in different places?

Thanks to Cambridge University's Andy Wheeler for the answer! Like this podcast? Please help us by supporting the Naked Scientists
  Dr Chris Smith author
2024-11-15

  Why do geese honk while flying in formation?

Rick wants to know why the Canada geese he's been observing, who are preparing to migrate for the winter, are honking so incessantly while flying in formation. Viola Ross-Smith from the British Trust for Ornithology was on hand to help James Tytko with...
  Dr Chris Smith author
2024-11-08

  Are multi cancer screening tests worth the money?

Van writes in with, 'A friend is encouraging me to take a cancer screening test that screens for many different cancers. A review of one test says: "While overall it picks up 90% of stage 4 cancers, it only detects an average of 17% of stage 1 cancers....
  Dr Chris Smith author
2024-11-01

  Could man have thrived if dinosaurs still roamed?

If dinosaurs hadn't been wiped out by a mass extinction event, would there have been room for humans to grow into the successful species we are today? That's what Colin wants to know, and James Tytko has promised to find the answer. He spoke with Dr Ch...
  Dr Chris Smith author
2024-10-25

  What is the spread of chemical isotopes on other planets?

Pamela wants to know whether the distribution of chemical isotopes is the same on other planets as it is on Earth. Take carbon, for example, 99% of which is carbon-12 on Earth while 1% is carbon-13? To find the answer, James Tytko asked Xander Byrne fr...
  Dr Chris Smith author
2024-10-18

  Do spiders have to learn how to make their webs?

David wants to know whether the intricate and varied spiders' webs seen in nature are a product of arachnid instinct, or something that is cultivated across their life. To get to the truth, James Tytko sought out spider expert Professor Sara Goodacre f...
  Dr Chris Smith author
2024-10-11

  When I scratch part of my body, why do I tingle elsewhere?

Jim writes in to say, 'Sometimes when I pinch near my knee, I will feel a tingling or tickling sensation behind one of my shoulder blades. What's up with that?' James Tytko found him an answer, with help from neuroscientist Dr Mark Hoon from the NIH......
  Dr Chris Smith author