
Tiny Matters
Take a dive into the genes, microbes, molecules and other tiny things that have a big impact on our world with Tiny Matters. Join scientists Sam Jones and Deboki Chakravarti as they take apart complex and contentious topics in science and help rebuild your understanding. From deadly diseases to ancient sewers to forensic toxicology, Sam and Deboki embrace the awe and messiness of science and its place in the past, present, and future. Tiny Matters releases new episodes every Wednesday and is brought to you by the American Chemical Society, a non-profit scientific organization advancing chemistry and connecting the broader scientific community. Tiny Matters is produced by Multitude.
Latest episodes

Apr 23, 2025 • 15min
[BONUS]: An inspiring pharmacist grandma and orcas wearing dead salmon hats: Tiny Show and Tell Us #21
In this episode of Tiny Show and Tell Us, we hear from a listener about her incredible grandma who’s a pharmacist in Venezuela (still, at 92 years old!) and has inspired her love of science and current lab work. We then talk about orcas spotted wearing dead salmon as hats, and what this fishy behavior may mean. 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.

Apr 16, 2025 • 29min
How glaciers safeguard Earth’s future and hold clues to our ancient past
The reason many of us hear about glaciers has to do with sea level rise — which makes sense! If all of the glaciers on Earth melted, sea levels are predicted to increase by about 230 feet (70 meters), which would flood coastal areas, envelope a number of islands, and seriously impact human infrastructure, including our current water resources. But glaciers do more than safeguard Earth’s future — buried within them is our ancient past. In January of this year, a team of scientists drilled nearly 2 miles down into an Antarctic glacier. The 1.7 mile long cylinder of ice they pulled up, called an ice core, holds the equivalent of 1.2 million years of climate history. In this episode of Tiny Matters, we talk about what glaciers mean to us today, their importance for the future of our planet, and what they tell us about Earth’s ancient past.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!Link to the Tiny Show & 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.

Apr 9, 2025 • 13min
[BONUS] Evolutionary adaptations to high altitudes and e-cigs vs. dry herb vaporizers: Tiny Show and Tell Us #20
In this episode of Tiny Show and Tell Us, we discuss the differences between e-cigarettes (vapes) and far-less-studied dry herb vaporizers. Then we talk about some of the incredible evolutionary adaptations of populations of people living at high altitudes. 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.

Apr 2, 2025 • 28min
How 18th and 19th century 'race science' still has deadly medical consequences today
In the 1700s and early 1800s scientists from Europe and the Americas were studying what they called "race science," a pseudoscientific field of study promoting the idea that humans could be divided into separate and unequal races. Biases stemming from race science have influenced medicine for hundreds of years, and still have deadly consequences today. In this episode of Tiny Matters, we tackle some of these consequences, where they get their roots, and what people like our guest — physician and science communicator Joel Bervell — are doing to raise awareness and incite change.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!Link to the Tiny Show & 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.

Mar 26, 2025 • 13min
[BONUS] Crocheted wasp nests and sewage in reefs: Tiny Show and Tell Us #19
In this episode of Tiny Show and Tell Us, we discuss if a crocheted wasp nest could actually attract wasps and keep them from invading your property. Then we talk about how sewage is impacting the resilience of coral reefs.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.

Mar 19, 2025 • 31min
The rape kit: From controversial 1970s invention to ending the backlog today
In the 1970s, the rape kit began as a simple box with some envelopes, a comb, nail clippers, and a few other basic tools. The contents of the kit have evolved somewhat since then, but the technology to analyze samples has evolved astronomically. And, through and through, the rape kit has stood for the idea that every survivor has the right to go to a hospital, get a full forensic exam, and have their evidence taken seriously. On today's episode, we talk about how the rape kit became a reality and the woman who championed the rape kit into the tool it is today. We also discuss what the future of the rape kit could look like, how the rape kit backlog has grown of out control in some states, and what activists are doing about it.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!Link to the Tiny Show & 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.

Mar 12, 2025 • 11min
[BONUS] Double rainbows and mysterious chromosomes: Tiny Show and Tell Us #18
In this episode of Tiny Show and Tell Us, we cover the science of rainbows and why double rainbows are always mirror images. Then we talk about mysterious, yet super common, chromosomes called Robertsonian chromosomes that seem to have a significant impact on human health.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.

Mar 5, 2025 • 34min
Not just a ‘royal disease’: Hemophilia’s devastating past to recent advances
Hemophilia is a rare bleeding disorder caused by a deficiency in clotting factors in the blood, which can cause permanent damage to joints and, in some cases, life threatening bleeding, both externally and internally. Today, people with hemophilia can live generally long, healthy lives, but in previous generations, the future wasn’t so bright. In fact, less than a century ago the life expectancy for someone with hemophilia hovered around just 10 years. It doesn’t receive much attention, and when it does, what you hear might not be all that accurate. In today’s episode, we cover the history of hemophilia and the science behind treatments over the decades, including the devastating impact of the HIV/AIDS epidemic on hemophilia patients. We’ll also clear up several misconceptions, including one that seems to show up a lot in popular culture: that hemophilia is a "royal disease.” 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!Link to the Tiny Show & 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.

Feb 26, 2025 • 15min
[BONUS] Fungus farming ants and disappointing orange juice: Tiny Show and Tell Us #17
In this episode of Tiny Show and Tell Us, we cover the incredible world of fungus farming ants and how it really needs to be a Pixar movie. Then we talk about what makes fresh squeezed juice taste so much better than the mass produced processed juices you pick up in the grocery store. 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.

Feb 19, 2025 • 28min
How plants shaped our world: Rising oxygen, blocky bones, and other pivotal moments in evolution
In the summer of 2011, paleontologist and science writer Riley Black was on a mission. Walking through the Montana desert, she was on the lookout for a Tyrannosaurus rex. But that day, she wasn’t having any luck. Sitting atop a rock, she pulled out a geological hammer, sometimes called a rock pick, to dislodge a little piece and try to discern its composition. What she saw was a leaf, but upon closer inspection realized it was in fact the fossil of a leaf. As it turned out, finding it likely provided so much more information than if she had come across the dinosaur. In this episode of Tiny Matters, we explore the complex and essential relationship between plants and animals across evolution and some of the pivotal moments that allowed humans to exist and that led to the world we live in 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!Link to the Tiny Show & 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.
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