Unfortunately Professor Hawking is unable to respond to specific scientific enquiries, or theories. Please do not email these as although they may be valid, we simply do not have the resources to comment on them. 

For media enquiries, please contact:

Tim Holt, Head of Media Relations at Cambridge University, 
Office of Communications,
01223 332300
tim.holt@admin.cam.ac.uk

For further enquiries about Stephen Hawking, please contact:

 Judith Croasdell
PA to Stephen Hawking CH, CBE, FRS
DAMTP University of Cambridge
Centre for Mathematical Sciences
Wilberforce Road
Cambridge
CB3 0WA

or 

Sam Blackburn
Technical Assistant to Stephen Hawking
DAMTP University of Cambridge
Centre for Mathematical Sciences
Wilberforce Road
CB3 OWA