Everything Everywhere Daily - Where Did Mathematical Symbols Come From?

One of the simplest mathematical statements possible is 2+2=4. While the concept is very easy to understand, when you write it down you have to use mathematical symbols which are, historically speaking, a relatively recent invention. At one point, mathematicians were doing reasonably complicated work without the benefit of symbols at all. Something which is unthinkable today. Learn more about mathematical symbols on this episode of Everything Everywhere Daily.

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Byzantium And The Crusades - Mongols and Mamluks Episode 2 “Mongols At The Gates”

In the the first half of the thirteenth century, it seemed as if nothing could stop the Mongols. Their empire stretched from the Pacific Ocean to the Mediterranean. Yet hopes grew in Europe that they would convert to Christianity and unite with the Kings of Europe in the greatest of all Crusades.

Please take a look at my website nickholmesauthor.com where you can download a free copy of The Byzantine World War, my book that describes the origins of the First Crusade.

The NewsWorthy - Special Edition: ‘Molly’ as Medicine? Psychedelics & PTSD

Today we’re talking about psychedelic drugs and their potential use as medicine. A new study looked at whether small doses of MDMA, better known by street names like ecstasy and molly, can help treat post-traumatic stress disorder.

Some researchers are calling prescription psychedelics, paired with professional talk therapy, the breakthrough they’ve been waiting for. We got fascinating insights about the latest study from its lead scientist, Doctor Jennifer Mitchell. She’s a neurology professor at UC San Francisco. 

But first, we’ll hear from Scott Ostrom, a Marine veteran who took part in the study. He says he struggled with PTSD for more than a decade after coming home from Iraq and that the MDMA treatments helped in ways other therapies had not.

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More or Less: Behind the Stats - The Seaspiracy ?virtually empty ocean? claim

Popular Netflix documentary Seaspiracy has sparked a lot of debate recently, including some controversy over some of the claims the documentary makes and the numbers behind them. One of the most striking is that: ?if current fishing trends continue we will see virtually empty oceans by the year 2048.? Although overfishing is a global problem, we take a look and find that this scenario is unlikely.

The Allusionist - 136. Misogynoir

“It's hard to address something if you can't actually name what it is,” says Moya Bailey, who coined a term that enables people to discuss a specific combination of racism and sexism: misogynoir.

Find Moya Bailey's work at moyabailey.com. Her new book is Misogynoir Transformed: Black Women's Digital Resistance. 

There's more about this episode, and a transcript, at theallusionist.org/misogynoir.

The music is by Martin Austwick. Hear Martin’s own songs at palebirdmusic.com or search for Pale Bird on Bandcamp and Spotify, and he’s @martinaustwick on Twitter and Instagram. 

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Reset with Sasha-Ann Simons - WBEZ’s Weekly News Recap

Clean energy, ethics, an elected school board and marijuana expansion — COVID-19 caused a backlog of bills in Springfield. Now legislators are frantically trying to finish up the spring session by Monday’s deadline. Reset gets an update on state legislation and finds out what’s been happening with police reform in Chicago, as well as a stalled plan to rename parts of the Outer Drive after Jean Baptiste DuSable. For more Reset interviews, subscribe to this podcast. And please give us a rating, it helps other listeners find us. For more about Reset, go to wbez.org and follow us on Twitter @WBEZReset

Consider This from NPR - Threats To Democracy Are Growing Around the World — And The U.S. May Be One Of Them

All over the world, democratic institutions are under threat. The United States isn't just part of that trend — it may also be one of the causes. Former Obama administration foreign policy adviser Ben Rhodes examines why in a new book called After the Fall: Being American in the World We've Made.

In participating regions, you'll also hear a local news segment that will help you make sense of what's going on in your community.

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Stuff They Don't Want You To Know - The Rise of Ghost Guns

Firearms are banned in many countries across the world, and it is highly difficult to acquire one. That is changing. The combination of 3D printing technology and the Internet - for better or worse - is moving the power of weapons manufacturing to the public domain.

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