I'm Mariana Spring, the BBC's social media investigations correspondent.

In my podcast, I've been investigating what happened to the daughter of a conspiracy theorist who died having rejected chemotherapy.

It would mean the world to me if I could make it that she wasn't just another in the long line of people that die in this way.

How does this reflect the rise of health conspiracy theories on social media and beyond?

The new series of Mariana in Conspiracy Land.

Listen on BBC Sounds. Eagle, we see you on the stair above.

In orbit, 60 miles above the moon, Neil Armstrong and Buzz Aldrin are beginning

preparations for their descent to the lunar surface.

They're on board Eagle, the lunar module, which is just about to separate from the command module, Columbia. Roger, Eagle, then, Doc.

Roger, how does it look?

The Eagle has wings.

Roger.

Looking good.

Watching Eagle drift slowly away from him, his command module pilot Michael Collins, who says farewell to his commander with a characteristic quip.

You got a fine-like-a-flying machine there, Eagle just bites back, you upside down.

Somebody's upside down.

There you go, one minute to TIG. You guys, take care.

See later.

TIG. Time of ignition. The moment when Collins will fire his engine

to put more distance between him and the lunar module.

A while later, Eagle's descent engine will also

fire, a burst of propellant that will send the lander from 60 miles to just 50,000 feet

...