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Welcome back to another edition of Cool Stuff, Ride, Homer.

We have some of the cool, intriguing, and interesting stories from around the world.

I'm Reggie Rizu alongside Marcus

Paff. On today's episode, we uncover the mysteries deep within the Earth's mantle. A nearly

complete ancient shark fossil is found in Peru, and on this day in history, a double feature.

The first woman to earn a medical degree in the United States and the birth of the Frisbee. That's all coming up on cool stuff.

Recent discoveries challenge long-held assumptions about Earth's mantle,

revealing unexpected structures that suggest the presence of ancient or unknown materials deep beneath the surface.

These findings based on ancient seismic imaging techniques raise questions about the

composition and history of the planet's interior. Studying Earth's mantle, a layer between the

core and lithosphere, is inherently challenging. Direct observation is impossible due to the extreme

depths, temperatures, and pressures. Instead, scientists rely on indirect methods,

...