## cosmology

**Shahn Majid**met up with

*Plus*to explain.

*Plus*is a special, marking the occasion of Stephen Hawking's 60th birthday. Plus attended his Birthday Conference in Cambridge, where we interviewed some of the world's most influential mathematicians and physicists.

*Plus*is very proud to present

**Professor Stephen Hawking**'s own Birthday Symposium address.

**Janna Levin**tells us more.