Beschikbare afleveringen

• Can we turn deserts green?

  Can we turn the world’s deserts green? CrowdScience listener Youcef is captivated by the idea of bringing water back to Earth’s driest landscapes. With sea levels rising and huge stretches of land drying out each year, he wonders...

  5 dec 2025 1984 sec.

• How big is a rainbow?

  When listener Sakura’s husband came home from his morning walk in Cambridgeshire, UK, he told her about a massive rainbow he’d seen. But when he showed her a picture, she didn’t think it was particularly large. So how big is a rainbow...

  28 nov 2025 1743 sec.

• Why do we cry?

  Tears of joy, tears of sadness, tears of frustration or tears of pain - humans are thought to be the only animals that cry tears of emotion. CrowdScience listener Lizzy wants to know: why do we cry for emotional reasons? What is its...

  21 nov 2025 1800 sec.

• Do tsunamis affect marine life?

  Tsunamis destroy buildings, habitats and danger to everything in its path on land. But how do they affect life under the water? That's what CrowdScience listener Alvyn wants to know, and presenter Anand Jagatia is searching beneath the...

  14 nov 2025 1614 sec.

• Are near-death experiences real?

  In your final moments, they say, you may walk down a tunnel of light. You might rise above your body, watching the scene below before passing into another world. Perhaps you’ll be met by glowing figures, see your life flash before your...

  7 nov 2025 1586 sec.

• Why do people love horror films?

  For some they’re the stuff of nightmares, but many of us can’t get enough of horror films. For Halloween, CrowdScience investigates the science of why we enjoy films that scare the living daylights out of us. CrowdScience listener...

  3 nov 2025 1886 sec.

• Should we help maggots and caterpillars?

  We all know insects are important, but one CrowdScience listener worries that they don’t seem to have equal billing when it comes to human love and attention. In Scotland’s capital Edinburgh, listener Ruth loves to sit and listen to...

  24 okt 2025 1632 sec.

• Can we record our senses?

  How would you record a special moment? Maybe you could take a photograph, film a little video, or record some audio. We have lots of ways of recording what life LOOKS and SOUNDS like, but is the same true for the other senses? What if...

  17 okt 2025 1589 sec.

• Are atoms immortal?

  Atoms are the building blocks of our world. Many have been around since right after the Big Bang created the universe nearly 14 billion years ago. And if life on Earth is made of atoms that are from all the way back then... will those...

  10 okt 2025 1588 sec.

• Why are some animals black and white?

  Listener Jude in Canada wants to know why some animals are black and white. Why do zebras risk being so stripy? Why do pandas have such distinct marking? And do they have something in common? Presenter Caroline visits Pairi Daiza, a...

  3 okt 2025 1622 sec.

• Answers to even more questions

  Sometimes in science, when you try to answer one question it sparks even more questions. The CrowdScience inbox is a bulging example of that. We get tons of new questions every week and many of those are following up on episodes...

  26 sep 2025 1588 sec.

• Do birds understand us?

  CrowdScience listener David is a bird whisperer. On his family farm in Guinea, he would mimic the call of the black-headed weaver. He could replicate it so well that the birds would fly in close, curious to find out who was calling....

  19 sep 2025 1589 sec.