16 DECEMBER 1989, page 13

Scenes From Science

Sweeteners NOBODY can tell precisely what makes a particular substance taste sweet to you — not even organic chemists who are professionally engaged in synthesis- ing......

As If It Were Normal

Timothy Garton Ash watches the East taking readily to democracy Warsaw IN revolutions, those who were at the bottom suddenly come out on top. Prison- ers take charge of the......

Correction

In John Simpson's article from Prague last week, the heading should have referred to `the turncoats revolving at Czechoslovak television'.......