This BBC podcast is supported by ads outside the UK.
Hi, I'm Xing Xing.
And I'm Simon Jack.
And together we host Good Bad Billionaire,
the podcast exploring how some of the world's richest people made their fortunes.
And we are back with a brand new season of Billionaires.
Yes, movie megastar, Arnold Schwarzenegger, America's richest self-made businesswoman,
Diane Hendricks, and co-founder of Snapchat, Evan Spiegel, to name just a few.
And we're asking you, the listener, to decide if they're Good Bad or just another billionaire.
Good Bad Billionaire from the BBC World Service.
Listen now wherever you get your BBC podcasts.
Science in Antarctica, science in general is the future.
It's one of the sides of the future that we are fighting for.
We need to survive.
I'm Harrison Lewis.
Not long ago, I was in Kiev, Ukraine.
There, I met a group of remarkable people fighting on two fronts,
against the violence tearing through their country and against another,
slower-moving catastrophe, climate change.
The national Antarctic Scientific Centre, or NASC,