The Guardian news.

• Hunger primes the brain for junk food http://www.guardian.co.uk/science/2011/nov/16/hunger-primes-brain-junk-food?CMP=twt_fd 
• Amphibians facing 'terrifying' rate of extinction http://www.guardian.co.uk/environment/2011/nov/16/amphibians-terrifying-extinction-threat?CMP=twt_fd