Science Happenings

'On the brink' species counted

East Asia's status as the world's main "extinction hotspot" is confirmed in the new Red List of Threatened Species.

• 'Seize moment' call at Rio summit
• Rio weakens on energy and water

Infrared reveals new art details

Italian researchers unveil a novel method of artwork analysis using infrared light, showing off never-before-seen details of Renaissance and modern works.

• Caravaggio's Lazarus restored
• X-ray reveals hidden Goya artwork