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Hello and welcome to Curiosity Daily from Discovery. Time flies when you're learning super cool stuff.

I'm Nate.

Guys, welcome back. We are so excited to have you if you're dropping in for the first time. We're glad to have you with us. I'm Callie.

Today you'll learn about how whales could be carrying on conversations from over 60 miles away,

the struggles of foster moms in the 1600s, and why your blood pressure reading might be way off. I think my blood pressure went up

just hearing about the second story, so I do want to learn about it. Bo-head whales are among the

largest whale species on the planet, weighing upwards of 220,000 pounds and measuring

up to 65 feet long. They get their names, as you might have guessed, from the shape of their heads,

which is enormous and bow-shaped, and makes up about a third of their entire bodies. But one of the

most fascinating things about them is their vocalizations.

Right. If I remember correctly, they're known for really complex vocalizations,

which is not totally unlike other whales, right?

Correct. But one thing that has fascinated scientists for over five decades is how far their vocalizations travel and why.

Okay, what do you mean?

So in the 1970s, some marine scientists proposed a theory that

baleen whales, like the bowhead, might be able to communicate across literally hundreds of miles.

He bases hunch on observations of their vocalizations, which are low frequency and can

theoretically travel nearly 500 miles in certain ocean conditions. But just because those sounds

...