Dr Chris Smith of The Naked Scientists Photo: SUPPLIED
Naked Science
Loneliness can kill you; scientists in California have worked out that people who feel isolated experience specific changes to their immune systems. It goes some way to explaining why you're twice as likely to die from loneliness as you are from obesity. Also a new study reveals some reasons behind the slump in migrating bird numbers over the past 30 years, and clear evidence of why and how being overweight tends to run in families.
