Data journalism

How can Google Trends, one of the world's largest real-time data sets, help us to understand the world around us? Well, here to help sift through this mountain of data, fascinatingly, is Simon Rogers, author of What We Ask Google, published earlier this year.

He's an award-winning data journalist, writer, and speaker, co-host of the Data Journalism podcast, and author of Facts Are Sacred.

He's based in San Francisco, where he works as data editor at Google.

But today, he's sitting in front of me in London.