Professor Richard Dawkins has been forced to defend controversial comments he made online after saying the last time Muslims contributed something worthwhile was during the Middle Ages.
Dawkins, the bestselling author of The God Delusion, tweeted that all the world's Muslims had won fewer Nobel Prizes than Trinity College, Cambridge.
He went on to argue that although Muslims were responsible for many achievements during the Dark Ages, including alchemy and algebra, their contribution since then was questionable. His comments sparked outrage from many high-profile writers and journalists including author Caitlin Moran and Channel 4 News economics editor Faisal Islam.
Moran tweeted: "It's time someone turned Richard Dawkins off and then on again. Something's gone weird."
In response to another Twitter user who wrote that Muslims were responsible for alchemy and algebra, Dawkins replied: "Indeed, where would we be without alchemy? Dark Age achievements undoubted. But since then?"