Contact

One address for everything: [email protected]

A person reads your email, not a support queue. We usually reply within a few days.

Found a mistake?

Tell us the page and the figure, and link to a source if you have one. Corrections jump the queue.

Confused by one of our numbers?

Ask. Every figure follows a method we publish, but that doesn't always make it obvious.

Partnerships and advertising

We're open to both. What we won't do is change a number or a recommendation because someone paid us — the numbers are the whole product. Any sponsored placement is labelled as one.

What happens to your email

We use it to reply and nothing else. No mailing list, and we never pass it on. Ask us to delete the conversation and we will.