Picasso’s Guernica, as you’ve never seen it before
The ‘Rethinking Guernica’ website allows us to scrutinise Picasso’s anti-war masterpiece in greater detail than ever
How the scientific study of paintings has become accessible to everyone
A revolution in chemical-imaging techniques is bringing us closer to the original visions of artists such as Van Gogh
Paintings suffer from breakouts, too – but what is ‘art acne’?
It’s not just the Old Masters that get spots – small bumps have started to erupt on modern paintings