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Do we all see the same colors?

(KAREN BLEIER/AFP/Getty Images)

What if the color that you call blue and the color I call blue don’t look the same at all? When our brains see color, we’re really just seeing waves of light. Sure, we may be seeing the same waves when we look at the color blue, but do we know if our brains are interpreting those waves in the same way?

Dinosaur bones: How do we know their age?

The section of a dinosaur tail with feathers running through the amber piece. (Royal Saskatchewan Museum | R.C. McKellar)

Fossil dating is a lot like eating a delicious ice cream cake. Well, sort of. We find out how scientists look at the rock and elements AROUND a fossil to figure out its age. Plus: We talk to a scientist who studied one of the coolest fossils discovered recently: a dinosaur tail trapped in amber, complete with feathers!

Lighting the way for sea turtles at Gulf Islands National Seashore

Baby Kemp's ridley sea turtle at Gulf Islands National Seashore. (Courtesy of NPS)

We don’t know much about the long life of a sea turtle, since it’s mostly spent in the ocean. When they do come ashore to lay their eggs, we know the babies use the moon and stars to guide them back to sea. But what happens when hotels and houses and streetlights compete for their attention?

Surviving the desert at Joshua Tree National Park

Joshua trees at Joshua Tree National Park in California. (Courtesy of NPS)

The desert is hot, dry and deadly. But plenty of plants and animals thrive there. How do they do it? We’ll learn the tricks trees, bats and roadrunners use to make it in Joshua Tree National Park in California.

Making the sands sing at Great Sand Dunes National Park

Two people hiking on Dune Ridge at Great Sand Dunes National Park in Colorado. (Image courtesy of NPS)

When an avalanche happens at the Great Sand Dunes in Colorado, it sounds like the sand is singing. Huh? How? Why? We learn about the special sand and the specific conditions that make this acoustic phenomenon possible.

Tracking wild horses at Assateague Island National Seashore

A wild horse at Assateague Island National Seashore. (Jeff Jones | Brains On)

The wild horses at Assateague Island National Seashore in Maryland are very popular, but they’re also an invasive species. We find out how park rangers are giving people a chance to see the horses while also protecting the native plants and animals FROM the horses.

Going underground at Wind Cave National Park

Boxwork lines the walls of Wind Cave. (Marc Sanchez | Brains On)

Producer Marc Sanchez shows us the wonders hidden underground at this national park in South Dakota and how tricky it can be to explore uncharted territory with only a headlamp to light the way.

How does the internet get to us?

Optical fiber connections at Ekinops (Fred Tanneau TANNEAU | AFP | Getty Images)

In this episode, we find out how a system of cables around the globe (and deep in our oceans) brings websites, songs, videos and podcasts to our phones and computers, almost at the speed of light.

What makes cute things cute?

(Christopher Furlong/Getty Images)

Think of the cutest puppy, kitten or baby you’ve ever seen. Now what sound did you just make? Was it an “Awwwww?” Or did you want to pinch, bite or squeeze it? In this episode, we’ll find out why this is a natural reaction to cute and why we’re so easily distracted by cute things.