Sunday Pick: How many friends do I need?

The boiling river of the Amazon | Andrés Ruzo

Why some of us don't have one true calling | Emilie Wapnick

Why I love a country that once betrayed me | George Takei

The danger of a single story | Chimamanda Ngozi Adichie

The unheard story of David and Goliath | Malcolm Gladwell

Never, ever give up | Diana Nyad

Everyone around you has a story the world needs to hear | Dave Isay

How AI is saving billions of years of human research time | Max Jaderberg

Forget the corporate ladder — winners take risks | Molly Graham