The gift of science

科学的馈赠

The Documentary Podcast

2025-12-25

26 分钟
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Our present to you is the science of gifts. First, we investigate the health benefits of donating blood, and find out about the predator sharing a feast of food in the Arctic. We are then joined in the studio by physicist Dr Krishma Singal from Rice University, who unravels the soft-matter physics and brilliant engineering potential of knitting. Next, we discuss the reputation of piranhas, enquire about the uniqueness of our sneezes, and break down how salting roads makes them safer in the winter.
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  • This BBC podcast is supported by ads outside the UK.

  • In more detail, search for Lenovo.

  • We're going to go through the main doors into the cyclotron facility.

  • It's like a kind of giant cavern with a giant box in the middle of the cavern.

  • Yeah, so we're actually standing directly outside of the main cyclotron vault.

  • Separating us from the cyclotron is about 10 feet of concrete right now.

  • Is that a safety thing?

  • Yes.

  • The radiation fields that the cyclotron generates when it is running are quite high.

  • For the BBC World Service, this is the documentary.

  • I'm on the hillside above Berkeley, California.

  • And while it feels like I've entered an end of the world bunker,

  • I'm not here to witness destruction.

  • I'm here to understand creation.

  • My name is Jennifer Pore and I'm a research scientist working in the heavy element program at Berkeley Lab.

  • My name is Jacqueline Gates.

  • I am the group leader of the heavy element group.

  • We study super heavy elements.

  • A super heavy element is any element with 104 protons or more.

  • Back in the 40s, when we were beginning to understand nuclear science,