Cari Donaldson, a 37-year-old freelance writer who home-schools four of her six children, created a bracket of 64 past pontiffs in order to pick the best pope ever.

WSJ: March Madness, Vatican Style: Who'll Come Out of the Sweet Sistine?

Cari Lynn, a young writer who spent two years as a clerk at the Chicago Mercantile Exchange, finds a world populated by larger-than-life characters, high-stakes risk-taking, and excess in all its forms.

ECONOMIST: Chicago's trading pits

Engaged to former journalist Cari Tuna, Moskovitz and his fiancee founded Good Ventures and plan to publish their grants and conversations with charities with the goal of rewarding results over crafty fundraising techniques.

FORBES: Dustin Moskovitz

He recently launched a foundation, Good Ventures, with girlfriend Cari Tuna and joined the Giving Pledge, an effort by Gates and Buffett to get fellow billionaires to give away at least half their wealth.

FORBES: A COURSE IN GIVING

The letter itself is perfectly lovely but what caught my attention was the photo of him and his girlfriend Cari Tuna that accompanies the letter, as well as his dedication to her in the pledge.

FORBES: Facebook Billionaire Takes Giving Pledge With Girlfriend

Cari Rosen, author of The Secret Diary of a new Mum aged 43 and a quarter, told the Today programme's James Naughtie that it was much more acceptable to be an older mother today than in the past.

BBC: Older motherhood 'becoming more acceptable'