A new season of Survivor means a new season of On Fire, the only official Survivor podcast.

Each week, we break down the game like nobody else can.

From how the season is built to why the players make the moves they do,

it is the ultimate companion to the show.

So if you love Survivor, I think you're going to love On Fire.

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In September of 1928, Alexander Fleming, a bacteriologist at St. Mary's Hospital, returned from vacation to discover

something strange. He'd been studying Staphylococcus bacteria, the kind that causes everything

from skin infections to pneumonia, and had forgotten to throw away a few petri dishes before his

trip. Now, they were covered in a strange blue-green mold.

Most scientists would have tossed them out, but Fleming looked closer.

Wherever the mold had spread, the deadly bacteria around it had simply vanished.

He called the mysterious substance, penicillin.

Fleming discovered that the penicillin could kill a stunning range of dangerous bacteria, potentially the basis for life-saving medicine.

But there was a problem.

He could barely produce enough to fill a teaspoon, let alone treat patients.

So, for more than a decade, penicillin sat on a shelf, little more than a scientific curiosity.

Then came World War II.

And suddenly, Fleming's forgotten mold became the most valuable substance on Earth.

Soldiers weren't just dying from bullets and bombs,

but from infections that turned small wounds into death sentences.

The Allies knew penicillin could potentially save these lives,

...