Tiny Matters

[BONUS] Bat periods and toxins from fungi: Tiny Show and Tell Us #39

Tiny Matters

Show Notes

In this episode of Tiny Show and Tell Us, we learn that humans aren’t the only mammals who menstruate. We explore the fulvous fruit bat’s 33‑day cycle, how reproductive biology differs across species, and why scientists still don’t fully understand why menstruation evolved in the first place. Then we take a deep dive into the world of mycotoxins: dangerous compounds produced by fungi. We cover how these toxins form, why they’re so hard to eliminate, and risks they pose to agriculture, livestock, and human health. We need your stories — they're what make these bonus episodes possible! Write in to [email protected] *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.

More from Tiny Matters

Oct 21, 2026

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Oct 14, 2026

For decades, coal miners relied on canaries to warn them about deadly carbon monoxide underground. Canaries were retired from that work at the end of the 20th century, but today scientists still rely on certain organisms, referred to as sentinels, to reveal hidden environmental threats. In this episode, we trace the history of the canary in the coal mine to today and explore how researchers use songbirds, mussels, and oysters to monitor mercury, industrial pollution, and other contaminants that can linger in ecosystems for generations. NOAA's Mussel Watch program is celebrating 40 years! Learn more here: https://coastalscience.noaa.gov/news/a-legacy-of-coastal-health-celebrating-40-years-of-noaas-national-mussel-watch-program/ Related episodes you may enjoy: How do you save a species?: Breakthroughs from cheetahs, red wolves, and 'spicy' toads Deep sea mining: Environmental uncertainty, ‘Law of the Sea,’ and shark potatoes See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Oct 7, 2026

In this episode of Tiny Show and Tell Us, a listener asks why maternal mortality rates in countries like the U.S. and Canada have risen while many other wealthy nations have seen them plateau or even decrease. We talk about postpartum health, racial disparities, access to care, and why support after birth can be just as important as care during pregnancy and delivery. Then we switch gears and discuss how we know the colors of some dinosaurs. The answer lies in tiny fossilized structures called melanosomes, which allowed researchers to reconstruct some of the colors of dinosaurs. Related episodes you may enjoy: The Mothers of Gynecology: The centuries that led to today’s Black maternal mortality crisis Dinosaur Fossils: Inspiring Jurassic Park and helping us predict Earth's future 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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