
CBC製作的Quirks and Quarks
CBC
分类: 科學與醫學
听听最后一集:
All the colours of the rainbow, plus one
Researchers have fired lasers directly into the eye to stimulate photoreceptors, and produce the perception of a colour that does not exist in nature. They describe it as a “supersaturated teal,” and hope the technique will allow them to better understand colour vision and perhaps lead to treatments for vision problems. Austin Roorda has been developing this technology using mirrors, lasers and optical devices. He is a professor of Optometry and Vision Science at University of California, Berkeley. The study was published in the journal Science Advances.
Following in the footsteps of an ancient ankylosaur
Paleontologists have found fossil footprints of an armoured dinosaur in the Canadian Rockies that fill in a critical gap in the fossil record. The footprints belonged to a club-tailed ankylosaur about five to six metres long, and are the first evidence of this type of dinosaur living in North America in a period known as the middle Cretaceous. The research was led by Victoria Arbour, curator of paleontology at the Royal B.C. Museum, and published in the journal Vertebrate Paleontology.
Did the Neanderthals die from sunburn?
Neanderthals disappeared 40,000 years ago, and new research suggests this corresponds to a period of weakness in the Earth’s magnetic field that allowed an increase in the solar radiation reaching the surface. Researchers think they have evidence that modern humans were able to protect themselves from the sun better than Neanderthals could, and this might have contributed to the Neanderthal extinction. Raven Garvey is an anthropologist at the University of Michigan. Her team’s research was published in the journal Science.
Cloudy with a chance of ammonia mushballs
New observations and models of activity within Jupiter’s stormy atmosphere is giving a weather report for the giant planet, and it’s pretty extreme. Most interestingly, researchers predict conditions that could lead to violent lightning storms producing softball sized frozen ammonia “mushballs” that would rain through the upper atmosphere. The research was led by Chris Moeckel, a planetary scientist and aerospace engineer at the University of California-Berkeley Space Sciences Laboratory, and was published in the journal Science Advances.
Shattering heat records: climate change is turning out to be worse than expected
In the last few years, we’ve seen global temperatures rising faster, with more extreme localized heatwaves, than climate models predicted. Climate scientists are trying to understand this by investigating the underlying factors behind these heating trends.
Richard Allan, from the University of Reading in the U.K., was expecting a larger than normal rise in global temperatures due to natural fluctuations, but global temperatures in 2023 and 2024 were much higher than expected. Their recent study in the journal Environmental Research Letters found a growing imbalance in the earth’s heat system, with increasingly more heat coming in than leaving, in large part due to changes we’ve seen in global cloud cover.
This global heating is not happening evenly around the world. Kai Kornhuber, from the International Institute for Applied Systems Analysis in Austria and Columbia Climate School in New York, found regional hotspots that are experiencing unexpected extreme heat, likely due to a combination of factors. That study is in the journal PNAS.
以前的剧集
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657 - Understanding heat extremes and more... Fri, 25 Apr 2025
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656 - What the dinosaurs did and more... Fri, 18 Apr 2025
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655 - How human noises impact animals, and more… Fri, 11 Apr 2025
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654 - Our bodies and brains fight weight loss, and more… Fri, 04 Apr 2025
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653 - Moving forests to save the butterflies, and more... Fri, 28 Mar 2025
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652 - What fossil plants say about the evolution of life, and more… Fri, 21 Mar 2025
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651 - The silent, long-term effects of COVID, and more... Fri, 14 Mar 2025
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650 - The recipe for finding life on other planets, and more... Fri, 28 Feb 2025
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649 - Is it Dark Energy, or is time just different in space? And more… Fri, 21 Feb 2025
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648 - How AI is transforming science, and more... Fri, 14 Feb 2025
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647 - The rapidly changing Arctic, and more Fri, 07 Feb 2025
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646 - Technology to preserve biodiversity and more… Fri, 31 Jan 2025
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645 - Solving mysteries in our solar system, and more Fri, 24 Jan 2025
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644 - Climate scientists as physicians of the planet, and more Fri, 17 Jan 2025
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643 - How crocheted hats help scientists learn about cats, and more Fri, 10 Jan 2025
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642 - Our Listener Question Show Fri, 03 Jan 2025
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641 - Silly seals sabotage serious science and more… Fri, 27 Dec 2024
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640 - Our holiday science book show Fri, 20 Dec 2024
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639 - The Human Cell Atlas: ‘Google Maps’ for our bodies, and more… Fri, 13 Dec 2024
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638 - Hacking photosynthesis — how we'll improve on Mother Nature Fri, 06 Dec 2024
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637 - Exploring the limits of human longevity, and more Fri, 29 Nov 2024
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636 - A brain ‘car wash’ could prevent neurological diseases and more… Fri, 22 Nov 2024
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635 - An environmental historian looks at our symbiosis with trees and more… Fri, 15 Nov 2024
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634 - New fishing technology could save endangered Right whales and more… Fri, 08 Nov 2024
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633 - The science of art appreciation, and more Fri, 01 Nov 2024