201803
Royal Institution, debate with Philip Ball
The Royal Institution. London, United Kingdom
201803
The Royal Institution. London, United Kingdom
201802
Gresham College. London, United Kingdom
201801
Loxford School. London, United Kingdom
201712
Colchester, Essex. United Kingdom
201709
University College London. London, United Kingdom
201709
London Excel Centre. London, United Kingdom
201706
Royal Society, Parabola Arts Centre, Cheltenham Ladies' College. London, United Kingdom
201706
Trondheim, Norway
201705
East London Science School. London, United Kingdom
201705
Hampstead Garden Suburb Astronomical Society