Did climate change kill ancient Australia's megabeasts?
How lasers are quicker on the draw than 3 D printing
Why do we live with cats and dogs?
Canyons, craters and mountains: The spectacular Martian terrain carved by swathes of water
We road test smart cars in South Korea and investigate the Netherlands' intelligent roads
Will the new H7N9 strain of bird flu present a wider threat to humans?
Why are we so fascinated by gold?
The alien mountains, canyons and craters that inspire scientists and writers
DNA - its discovery and how the double helix has shaped biological science since
The app that lets people discover how closely they are related in Iceland