In the two-round system, a divided opposition does not matter if it unites in the second round.

ECONOMIST: Senegal: Beneath the calm | The

The first round of France's two-round, single-constituency system has always been a time for voters to express discontent with impunity.

ECONOMIST: Those mutinous French

Kepler-37b is a tad larger than our heavenly dance partner, the Moon, and whizzes round a star much like our Sun, with two larger planets in its system for company.

ENGADGET: NASA's Kepler telescope spies smallest planet to date, no aliens