It’s hard to imagine, but the moon we all know and love hasn’t always been in the sky. Like all of us, the moon has an age. Until recently, our lunar neighbor has been estimated to be about 4 billion years old.
But new research on lunar crystals from the Apollo 17 mission has helped researchers pinpoint a more specific age for the moon—and it’s about 40 million years older than previously thought.
That difference may sound like a drop in the bucket given the time scales, but lead study author Dr. Jennika Greer says this is a big deal, because it tells us more about what the solar system was like in its earlier years. Greer, a postdoctoral researcher at the University of Glasgow in Scotland, joins guest host Flora Lichtman to talk about her methods and why the early universe was so fascinating.
The Science Behind Your Unraveling SweatersIt’s sweater season once again, but you may have noticed that some of your newer sweaters aren’t standing the test of time. Perhaps they are pilling, unraveling, or losing their shape. But if you look at sweaters from the ‘80s or ‘90s, they may still look brand new. Last month, an article by Amanda Mull in the Atlantic about declining sweater quality made the rounds online, and we wanted to know more.
What, scientifically, went wrong in sweaters? And why are sweaters so bad now?
Guest host Flora Lichtman unravels the science of sweaters with Dr. Imran Islam, knit expert and assistant professor at the Fashion Institute of Technology in New York City. They chat about the fibers that make up sweaters, what physics has to do with how long they last, and what to look for when purchasing knitwear.
To stay updated on all things science, sign up for Science Friday's newsletters. Transcripts for each segment will be available the week after the show airs on sciencefriday.com.
609: Women Athletes, Stem Cell Cornea Repair, Sand. August 18, 2023, Part 2
608: Covid Update, Brain Fog Research, Toilet to Tap. Aug 18, 2023, Part 1
Pod Pregnancy Movie, Increase In Deep-Sea Mining, Upcoming Astronomical Delights. August 11, 2023, Part 2
Hawai’i Wildfires, Blue-Fin Tuna Science, Maine’s New Lithium Deposit. August 11, 2023, Part 1
Answering Evolution Questions, Planetary Protection. Aug 4, 2023, Part 2
Artificial Sweetener Safety, Nuclear Weapons Tech. Aug 4, 2023, Part 1
The Cat’s Meow, Chumash Marine Sanctuary, EV Tires. July 28, 2023, Part 2
Kākāpō Conservation, NYC Parrots, One Year After the Dobbs Decision. July 28, 2023, Part 1
How Does The Brain Control Your Every Move? July 21, 2023, Part 1
What To Know Before You Go See ‘Oppenheimer’. July 21, 2023, Part 2
Lab-Grown Meat Approval, Underground Climate Change, Utahraptor. July 14, 2023, Part 2
Youth Mental Health Crisis, Repairing Sharks’ Bad Reputation. July 14, 2023, Part 1
Accessible Birding, Space Sounds, Wasps. July 7, 2023. Part 2
Beavers, Pando Tree, $7 Violin. July 7, 2023. Part 1
Cloning for Conservation, Cubesats, Queer Ecology, Henry Petroski. June 30, 2023, Part 2
Hum Of The Universe, Cephalopod Event In Miami. June 30, 2023, Part 1
Social Media Chaos, Remembering Whale Song Scientist Roger Payne. June 23, 2023, Part 2
Cephalopod Week Salutes See-Thru Squid, Hyperbole In Science Publishing, Art and the Brain, Rover Competition. June 23, 2023, Part 1
Avian Flu, Curly Hair. June 16, 2023, Part 2
Science Books For Summer Reading. June 16, 2023, Part 1
Create your
podcast in
minutes
It is Free
The Modern West
Just Dumb Enough Podcast
Voices of Misery Podcast
House of Whimsical Terror
Stuff You Should Know
Timcast IRL