logo
episode-header-image
May 2025
25m 29s

Could Freezing Arctic Sea Ice Combat Cli...

Scientific American
About this episode
The year-round sea ice in the Arctic is melting and has shrunk by nearly 40 percent over the past four decades. Geoengineering companies such as Real Ice are betting big on refreezing it. That may sound ridiculous, impractical or risky—but proponents say we have to try. The U.K. government seems to agree, investing millions into experimental approaches such ... Show More
Up next
Yesterday
Chris Hadfield’s Fictional Universe Is Rooted in Real Space History
What happens when a real-life astronaut turns to fiction? In this episode, Chris Hadfield shares how decades of spaceflight and global diplomacy inspired his latest novel, Final Orbit, a cold war thriller packed with historical intrigue and technical precision. Host Rachel Feltma ... Show More
10m 52s
Oct 6
Enceladus’s Alien Ocean, Ancient Fungi and the Flavor of Influenza
Saturn’s moon Enceladus reveals complex organic molecules that could hint at extraterrestrial life. Researchers also uncover fungi’s ancient reign over Earth and warn that second COVID infections may pose greater risks to young people. Plus, ants ferment yogurt, and flu detection ... Show More
9m 47s
Oct 3
Enter One of the World’s Quietest Rooms
Inside one of the quietest rooms in the world, host Rachel Feltman meets artist-in-residence Seth Cluett at the historic anechoic chamber at Bell Labs to explore the science of silence and sound perception. From popping balloons in total silence to hearing your own nervous system ... Show More
20m 5s
Recommended Episodes
Jul 2024
On Thin Ice: Contemplating Our Climate Future in Antarctica (Part 4)
We’re at the end of the Nathaniel B. Palmer’s Antarctic expedition. The researchers onboard are returning sea ice and thousands of gallons of seawater. These samples will allow them to examine biogeochemical processes, some of which are linked to climate change. As the research v ... Show More
17m 40s
Jul 25
Greenland’s Ice Sheet Is at Risk—And So Are We
Chief multimedia editor Jeffery DelViscio ventured to Greenland for a month to learn from the scientists studying the country’s ice sheet. He speaks with host Rachel Feltman about his time in the field and his takeaways from conversations with climate scientists. This story was s ... Show More
22m 5s
Aug 11
The Life Scientific: Liz Morris
A frozen, white world at the far-reaches of the globe, where you're surrounded by snow and silence, might sound rather appealing. Factor in temperatures that drop to -57°C and a few of us might be put off - but for glaciologist Liz Morris, that's very much her happy place.Liz is ... Show More
26m 27s
Jan 2024
The Science of the South Pole
We’re on board the RSS Sir David Attenborough for the vessel’s first big science season in the Antarctic, since it launched in 2020. It’s crewed by scientists involved in Project Biopole, a 5-year mission attempting to better understand carbon cycle at the poles. Nadine Johnston, ... Show More
28m 12s
Aug 27
Ice Sheet Time Machine
The US military carved a tiny city into the Greenland ice sheet. What they found, and lost, and found again, and what it tells us about climate change. Guests: Paul Bierman, geoscientist at the University of Vermont and author of When The Ice Is Gone; Richard Alley, geoscientist ... Show More
31m 40s
Oct 2020
The Skeptics Guide #799 - Oct 31 2020
COVID-19 Update; News Items: Pandemic Holidays, Water on the Moon, Murder Hornets Murdered, High Value Plastic, Exoplanet View of Earth; Who's That Noisy; Your Questions and E-mails: Superconductors and Computers, Beef and Climate Change; Interview with James Randi; Science or Fi ... Show More
1h 54m
Apr 2025
The Age of Aquaticus
For years, scientists thought nothing could live above 73℃/163℉. At that temperature, everything boiled to death. But scientists Tom Brock and Hudson Freeze weren’t convinced. What began as their simple quest to trawl for life in some of the hottest natural springs on Earth would ... Show More
43 m
Jun 2025
Will the Hole in the Ozone Layer Close?
40 years ago scientists in Antarctica discovered a hole in the Ozone layer. The world acted quickly, phasing out harmful CFCs or chlorofluorocarbons. Evidence suggests the hole has been getting smaller. But in 2025, there are new pollutants threatening to slow progress. Eloise Ma ... Show More
28m 17s
Apr 2024
‘Til the landslide brings it down
When officials commissioned a set of updated hazard maps for Juneau, Alaska, they thought the information would help save lives and spur new development. Instead, the new maps drew public outcry from people who woke up to discover their homes were at risk of being wiped out by la ... Show More
29m 9s
Jun 2023
Oceans in hot water?
As Pacific Ocean temperatures rise, a major El Niño is looming. Experts from the European Centre for Medium range Weather Forecasting, Magdalena Balmaseda and Tim Stockdale, join us to discuss how it is heating up the world and if it could herald in a new period of climate uncert ... Show More
28m 19s