Hello, I'm Greg Jenner. I'm the host of Your Dead to Me, where the best names in comedy and history join me to learn about and laugh at the past.

You are a traitor. And in the new series, we'll meet Aristotle.

I think he might have been a time traveller. Someone who's like almost a glitch.

We'll dive into the causes of the British Civil Wars in the 1600s.

In England at this period, there's people can't get on the housing ladder.

This sounds familiar. And we'll discover the arts and crafts movement. I love the clothes. I love

the vibe. Yes, we're a comedy show that takes history seriously and then laughs at it. You're dead to me.

Listen first on BBC Sounds. Ellen Garland is perched on the deck of a small research vessel,

floating on the high seas of the eastern Pacific Ocean just off the coast of Australia.

Hanging off the side of the boat, Ellen's right ear is flat to the water surface.

She's listening out for the unearthly call of a humpback whale.

I don't exactly know why, but I've always wanted to study whales. And I was just captivated,

absolutely captivated by these majestic creatures. Ellen closes her eyes and focuses,

because of course, she's not just listening for pleasure.

Back then, in the early 2000s,

she was a young PhD student,

working alongside some of the most celebrated whale researchers in the world,

and she couldn't believe her luck.

Sometimes they sing so loud that the sound will actually come up into the air around you.

And so to actually see these animals singing, I was off for a massive adventure.

I'm Hannah Fry, a mathematician who studies patterns in human behaviour.

This is uncharted.

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