How did the richest people on the planet make their fortunes?
I'm Simon.
Jack.
And I'm Zing Singh.
Join us for Good Bad Billionaire.
Each episode we pick a billionaire and we find out how they made their money.
Like the comedian Jerry Seinfeld, the financier George Soros, the golf star Tiger Woods.
Then Simon and I have a decision to make.
Do we think they are good, bad.
Or just another billionaire?
Good, bad billionaire.
Listen on BBC Sounds.
In a laboratory in 1950s Kolkata, a chemist stands at an old wooden bench.
Slowly, over hours, she adds a mixture of methanol and chloroform to a glass column.
Inside is a carefully prepared solution containing the finely crushed root of the plant Rulfia vomitoria.
And coming from the bottom, the steady drip of her hard earned prize.
It is a laborious process and when she's done, she won't be able to keep her freshly isolated chemicals.
She just doesn't have the money or resources to analyse them here.
But the tireless and uncompromising chemist knows that it will pay off with a new discovery.
I'm Ella Hubba.