logo
episode-header-image
Nov 2024
24m 56s

Less Than Kilogram

Wnyc Studios
About this episode

In today’s story, which originally aired in 2014, we meet a very special cylinder. It's the gold standard (or, in this case, the platinum-iridium standard) for measuring mass. For decades it's been coddled and cared for and treated like a tiny king. But, as we learn from writer Andrew Marantz, things change—even things that were specifically designed to stay the same.

Special thanks to Ken Alder, Ari Adland, Eric Perlmutter, Terry Quinn and Richard Davis.

And to the musical group, His Majestys Sagbutts & Cornetts, for the use of their song “Horses and Hounds.”

We have some exciting news! In the “Zoozve” episode, Radiolab named its first-ever quasi-moon, and now it's your turn! Radiolab has teamed up with The International Astronomical Union to launch a global naming contest for one of Earth’s quasi-moons. This is your chance to make your mark on the heavens. Vote on your favorites soon, check here for details: https://radiolab.org/moon

Sign-up for our newsletter!! It includes short essays, recommendations, and details about other ways to interact with the show. Sign up (https://radiolab.org/newsletter)!

Radiolab is supported by listeners like you. Support Radiolab by becoming a member of The Lab (https://members.radiolab.org/) today.

Follow our show on Instagram, Twitter and Facebook @radiolab, and share your thoughts with us by emailing radiolab@wnyc.org.

Leadership support for Radiolab’s science programming is provided by the Gordon and Betty Moore Foundation, Science Sandbox, a Simons Foundation Initiative, and the John Templeton Foundation. Foundational support for Radiolab was provided by the Alfred P. Sloan Foundation.

Up next
Oct 3
Adoptive Couple v. Baby Girl
This is the story of a three-year-old girl and the highest court in the land. The Supreme Court case Adoptive Couple v. Baby Girl is a legal battle that has entangled a biological father, a heart-broken couple, and the tragic history of Native American children taken from their f ... Show More
45m 29s
Sep 26
Voice
Over the course of millions of years, human voices have evolved to hold startling power. These clouds of vibrating air carry crucial information about who we are–and we rely on them to push ourselves up and out into the physical world.This week, we’re on a journey to understand h ... Show More
1h 6m
Sep 19
The Spark of Life
In the 1920s, a Russian biologist studying onion roots made a surprising discovery: underground, down in the darkness, it seemed like the cells inside the onion roots were making their own … light. The “onion root experiment” went on to become something of a cult classic in scien ... Show More
36m 1s
Recommended Episodes
Feb 2025
Exploring the Hidden Life in the Air around Us with Carl Zimmer
Scientists now agree that COVID spreads via airborne transmission. But during the early days of the disease, public health officials suggested that it mainly did so via close contact. The subsequent back-and-forth over how COVID spread brought science journalist Carl Zimmer into ... Show More
16m 47s
Mar 2025
Surekha Davies, "Humans: A Monstrous History" (U California Press, 2025)
Monsters are central to how we think about the human condition. Join award-winning historian of science in Humans: A Monstrous History (University of California Press, 2025) by Dr. Surekha Davies as she reveals how people have defined the human in relation to everything from apes ... Show More
1h 9m
Nov 2024
Science fiction meets reality with Ronald D. Moore. [T-Minus Deep Space]
T-Minus Space Daily Podcast Host Maria Varmazis was asked to host a fireside chat with Sci-Fi legend Ronald D. Moore at the Beyond Earth Symposium in Washington DC.  Ronald D. Moore is an American screenwriter and television producer. He is best known for his work on Star Trek, t ... Show More
49m 13s
Dec 2024
StarTalk with Bill Nye and Neil deGrasse Tyson
We take you to Planetary Society headquarters, where Neil deGrasse Tyson, astrophysicist and host of StarTalk, interviews Planetary Society CEO Bill Nye about the organization's 45-year history of empowering the world's citizens to advance space science and exploration. Then, we ... Show More
58m 24s
Feb 2025
The War on Science
U.S. science is in turmoil. Amid agency firings and confusion over federal funding, researchers are freaking out. Many can’t do their work, and they have no idea what the future holds. Plus, we’re hearing that all of this could jeopardize medical treatments for people in the U.S. ... Show More
37m 43s
Aug 2024
Bonus: Fun Fact or Fake Factoid?! A Chemistry and Trivia Showdown
In this bonus game edition of 'Chemistry For Your Life', host Melissa, co-host Jam, and guest Claire embark on an entertaining journey of debunking or verifying popular 'fun facts' submitted by their listeners. The game, titled 'Fun Fact or Fake Factoid', involves dissecting quir ... Show More
28m 6s
Nov 2021
Amerithrax at 20 w/ Robbie Martin
Guerrilla History- Intelligence Briefings will be roughly a twice monthly series of shorter, more informal discussions between the hosts about topics of their choice.  Patrons at the Comrade tier and above will have access to all Intelligence Briefings. We have another fun Intell ... Show More
1h 27m
Apr 2025
What is Gravity?
This episode is a weighty one. Some might say massive. It’s all about gravity. What is it? Why does it matter? Izzie and Dr Becky explore Einstein and Newton’s different ideas on the subject, plus Izzie visits the Royal Society to see Isaac Newton's original manuscript for his wo ... Show More
53m 54s
Sep 25
Circle of Days and the building of Stonehenge
Stonehenge has captured the imaginations of people for millennia, leading to conspiracy theories and fantastical ideas about its construction. But cutting-edge historical analysis has allowed us to reveal more of its secrets in recent times. Now, author Ken Follett has turned his ... Show More
50m 10s
Aug 21
Actual Astronomy - Listener Emails
Hosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan. actualastronomy@gmail.com The Actual Astronomy Podcast presents Listener Emails. In this episode we talk & read several listener emails including Observing Saturn, Equipment reports, telescope making ... Show More
45m 51s