Note posts made on our older Talkback system will still show below. However, new posts can only be made via the new system (above). We will export the old comments to the new shortly. You can still comment as a guest on the new system but it also allows you to login using various social network and other accounts.

Other features coming soon.

Latest Headlines in Science

• 1. World as barcode: Help for species; poachers beware
• 2. UN: Climate deal necessary to prevent migration
• 3. World and US must follow EU lead on climate change, says Sweden
• 4. ESA launches new satellite for monitoring climate
• 5. Planes soon will detect own structural damage