South America's modern art revolution hits you like a guerrilla attack in this dazzling survey at the Royal Academy. Prepare to see things differently As you look through Jesús Soto's Nylon Cube its blue, black and silver filaments chop up your per
Tate Britain, London What should have been an exploration of Clark's witty championing of great art turns him into a prehistoric old fart Kenneth Clark: arrogant snob or saviour of art? Why should people of the 21st century be interested in an art hi
In 1914 Otto Dix joined the German army as a fierce patriot; two years later he was mowing down British soldiers at the Somme. Yet few artists did more to reveal the true horror of the first world war.