

Tiny Matters
Multitude
Science shapes every part of our lives, but so much of its influence is overlooked or buried in the past. Tiny Matters is an award-winning podcast about tiny things — from molecules to microbes — that have a big and often surprising impact on society. From deadly diseases to forensic toxicology to the search for extraterrestrial life, hosts and former scientists Sam Jones and Deboki Chakravarti embrace the awe and messiness of science and its place in history and today, and how it could impact our world’s future. New episodes every Wednesday. Tiny Matters is brought to you by the American Chemical Society, a non-profit scientific organization based in Washington, D.C., and is produced by Multitude.
Episodes
Mentioned books

Nov 19, 2025 • 15min
[BONUS] Making magenta pennies and touching the sun: Tiny Show and Tell Us #35
Discover the fascinating process of transforming pennies into vibrant colors, from golden hues through zinc plating to a rainbow through oxide films. Hear how heating copper creates stunning color sequences and the practical tips for safe experimentation. Dive into NASA's Parker Solar Probe mission, designed to study the sun's corona and solar wind. Learn about the probe's remarkable speed and heat shielding technology, and explore how space weather impacts our planet with valuable insights gleaned from this groundbreaking mission.

Nov 19, 2025 • 2min
Introducing Planet Visionaries
Explore bold ideas and big solutions with Alex Honnold on Planet Visionaries, a podcast in partnership with the Rolex Perpetual Planet Initiative. I have become a regular listener this season and hope you enjoy it too!

Nov 12, 2025 • 33min
What's eating the Titanic?
Most of us know the story of the Titanic. In 1912, the massive — supposedly indestructible — steamship sank after hitting an iceberg on its first and only journey across the Atlantic Ocean. Titanic remained undiscovered on the seafloor, somewhere in the North Atlantic Ocean, for 73 years, until it was found nearly two miles beneath the surface. But now the ship might be disappearing again, this time for good. And the culprit is not another iceberg — it’s something much, much smaller.Send us your science facts, news, or other stories for a chance to be featured on an upcoming Tiny Show and Tell Us bonus episode. And, while you're at it, subscribe to our newsletter!All Tiny Matters transcripts and references are available here.See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Nov 5, 2025 • 34min
[BONUS] 4 years of Tiny Matters?! How we started, what we've learned, and where we're headed!
Reflecting on nearly four years of collaboration, the hosts dive into their journey from co-hosting to tackling complex scientific topics. They share insights on interviewing styles and the surprising benefits of being non-experts. Deboki reveals her unexpected passion for evolution, while Sam highlights impactful episodes on safety in science. With anecdotes about listener interactions and their evolution as a show, they discuss their future plans, including exciting themes for upcoming content and potential bonus episodes.

Oct 29, 2025 • 30min
New male contraceptives could be here soon. What took so long?
Join John Amory, a distinguished professor of medicine specializing in family planning, as he dives into the world of male contraceptives. He discusses the pressing need for more options, revealing the current landscape dominated by just three methods. The fascinating NEST-T trial is highlighted, showcasing a promising hormonal gel that could soon revolutionize male contraception. Amory also explores biological hurdles and insights, making a compelling case for why men need more equitable options in family planning.

Oct 22, 2025 • 12min
[BONUS] Why horseshoe crab blood is blue, HELLP syndrome, and a one-electron bond: Tiny Show and Tell Us #34
In this episode of Tiny Show and Tell Us, a listener writes in to tell us about being born 3 months premature likely due to their mom having HELLP syndrome, a variant of preeclampsia, and taking part in early trials for surfactants. Then we discuss why horseshoe crab blood is blue and the exciting generation of a one-electron bond between carbon atoms. We need your stories — they're what make these bonus episodes possible! Write in to tinymatters@acs.org *or fill out this form* with your favorite science fact or science news story for a chance to be featured.A transcript and references for this episode can be found at acs.org/tinymatters.See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

9 snips
Oct 15, 2025 • 27min
Trade, tyranny, and untapped potential: The history and science of spices
Kantha Schelke, a food-chemistry expert and senior lecturer at Johns Hopkins University, dives into the captivating world of spices. She discusses the overlooked potential of food bioactives compared to marine compounds. Kantha shares her personal memories of saffron harvesting and reveals exciting research on saffron's neuroprotective properties. The chemistry behind ginger's various forms and capsaicin’s pain-relief mechanisms also gets attention. Plus, they explore the antimicrobial benefits of cinnamon and cumin's practical applications in health.

Oct 8, 2025 • 16min
[BONUS] Fluorescent milk, ‘liquid’ glass, and studying ripples in spacetime: Tiny Show and Tell Us #33
In this episode of Tiny Show and Tell Us, we get to the bottom of if glass is a liquid or a solid and why riboflavin makes milk fluorescent. Then we talk about the Laser Interferometer Space Antenna (LISA) — the first space-based observatory that NASA scientists and their collaborators are sending up into space to detect and study gravitational waves, better known as “ripples in spacetime.” We need your stories — they're what make these bonus episodes possible! Write in to tinymatters@acs.org *or fill out this form* with your favorite science fact or science news story for a chance to be featured.A transcript and references for this episode can be found at acs.org/tinymatters.See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Oct 1, 2025 • 35min
How stunning 19th century dyes led to today's drugs
In 1856, after yet another day of disappointing experiments, a chemist named William Henry Perkin was cleaning up his glassware when he made a discovery that would harken a new — and colorful — era of science and industry. Just 18 years old, Perkin was a promising young student in a prestigious lab at the Royal College of Chemistry in London and he was supposed to be figuring out a way to make a chemical compound called quinine. Despite his best efforts, Perkin was coming up empty — or rather — producing a lot of dirty dishes with little to show for it. But he did notice that there was a curious goop in one of his flasks, and it turned a brilliant shade of purple in the wash. Intrigued, Perkin decided to try dyeing a swatch of silk with his serendipitous solution. Although he had failed yet again to produce quinine, Perkin had created the very first synthetic dye and launched a scientific industry that is still bringing new drugs and dyes to market today.Send us your science facts, news, or other stories for a chance to be featured on an upcoming Tiny Show and Tell Us bonus episode. And, while you're at it, subscribe to our newsletter!Links to the Tiny Show and Tell stories are here and here. All Tiny Matters transcripts and references are available here.See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Sep 24, 2025 • 14min
[BONUS] Wasp versus beetle and blood iron recycling: Tiny Show and Tell Us #32
Discover the fascinating world of parasitoid wasps and their role in pesticide-free pest control. The hosts dive into the drama between wasps and beetles, exploring why beetles have more species diversity. They also tackle the intricacies of red blood cell iron recycling and how our bodies utilize this essential element. With discussions on oxidation states and the incredible efficiency of iron recovery, this episode is packed with science facts that challenge our understanding of two tiny yet mighty subjects.


