The maker of Post-it notes and Scotch tape authorized a $12 billion stock repurchase program in February, replacing its current $7.5 buyback program. 3M's (MMM, Fortune 500) move followed its announcement late last year that it intends to spend $10 billion on acquisitions and repurchase up to $22 billion of shares over the next four years.
11. Our gut bacteria are messing with us in ways we could never have imagined. New research has revealed that neurodegenerative diseases like Parkinson's might actually start out in the gut, rather than the brain, and there's mounting evidence that the human microbiome could be to blame for chronic fatigue syndrome. With gut bacteria showing signs of controlling our appetite, changing our brain structure, and triggering brain lesions that could lead to strokes, our tiny passengers are a force to be reckoned with.