Mr Brown, by contrast, is somewhat in the shadow of Ms Merkel and Mr Sarkozy.

ECONOMIST: The prime minister's developing view of the world

This is perhaps the real contrast between Mr Cameron and David Davis, who left the shadow cabinet last month to dramatise his disgust with Labour's erosion of civil liberties.

ECONOMIST: David Cameron

In contrast, Yang' lensless microscope places the object close enough to the sensor that it casts a shadow.

FORBES: Magazine Article

In contrast, Yang's lensless microscope places the object close enough to the sensor that it casts a shadow.

FORBES: Magazine Article