"Every artist wants his work to be permanent. But what is? The Aswan Dam covered some of the greatest art in the world. Venice is sinking. Great books and pictures were lost in the Florence floods. In the meantime we still enjoy butterflies."
- VIDEO: One-minute World News Sun, 25 Jan 2015 15:12:11 GMT
- Watch the latest news summary from BBC World News. International news updated 24 hours a day.
- VIDEO: Body clocks and blindness Sat, 24 Jan 2015 00:35:43 GMT
- Our eyes are key to resetting our body clocks. So what happens to people who can't see anything at all?
- VIDEO: Killer whale could be set free Sat, 24 Jan 2015 02:46:17 GMT
- In the next few days the authorities in the United States will decide whether to put killer whales on the list of endangered species.
- VIDEO: Should spelling be simplified? Sat, 24 Jan 2015 08:30:11 GMT
- The English Spelling Society is drawing up a list of proposals to make it easier for children to learn to spell, including removing silent letters.
- VIDEO: What is King Abdullah's legacy? Fri, 23 Jan 2015 15:02:58 GMT
- Frank Gardner looks at the legacy of Saudi Arabia's King Abdullah, who died on Thursday
- Is there a diversity dividend? Sun, 25 Jan 2015 11:25:26 GMT
- Studies have shown that diversity in the workplace leads to higher revenues and dividends, but there are still road-blocks on the route to achieving a more balanced labour force.
- Goldman Sachs warns on Britain and the EU Sat, 24 Jan 2015 10:38:39 GMT
- Goldman Sachs president tells BBC - don't risk London's position as global financial capital.
- Who killed Alberto Nisman - and why? Fri, 23 Jan 2015 21:12:39 GMT
- The death of former state prosecutor Alberto Nisman leads to conspiracy theories and questions in Argentina, the BBC's Wyre Davies reports from Buenos Aires.
- Obama in India: Things to watch Sat, 24 Jan 2015 23:59:44 GMT
- US President Barack Obama is heading for India, but what will get done?
- VIDEO: How do you 'bounce' water? - 15 Secs Sun, 25 Jan 2015 07:45:02 GMT
- Scientists at the University of Rochester in New York have developed "self-cleaning" metal that enables water droplets to gather dust particles, then bounce and slide away.
- Appy days: Must see tech stories Fri, 23 Jan 2015 14:48:57 GMT
- Rory Cellan-Jones, technology reporter and presenter of the Tech Tent radio show, gives a round-up of the BBC's coverage of the week's big tech stories.
- Abraham Lincoln hair fetches $25,000 Sun, 25 Jan 2015 11:18:06 GMT
- A lock of President Abraham Lincoln's hair fetches $25,000 (£16,600) at an auction of memorabilia that sells for more than $800,000 in total.
- Post-traumatic stress 'in 1300BC' Sat, 24 Jan 2015 07:40:47 GMT
- Evidence of post-traumatic stress disorder can be traced back to 1300BC - much earlier than previously thought - say researchers.
- Aer Lingus 'to accept' new IAG bid Sun, 25 Jan 2015 12:47:30 GMT
- Irish airline Aer Lingus is set to approve a takeover bid by British Airways owner IAG, the BBC understands.
- ECB warns over 'weakened' EU project Sat, 24 Jan 2015 15:34:47 GMT
- A top official at the European Central Bank warns that unemployment and low growth are undermining the European Union.