Just because a vaccine is available doesn't mean people will choose to be inoculated, according to new research published amid widespread public confusion about the merit of H1N1 flu shots.

The research, appearing in the December issue of Health Services Research, looked at acceptability of potential future HIV vaccinations among high-risk adults in Los Angeles and demonstrated that many factors come into play when a person decides whether or not to be vaccinated.

Before you eat that next slice of pecan pie or second serving of mashed potatoes at Christmas dinner this year, you may want to think twice; those extra helpings could be even worse for your waistline than previously thought.

 A new research report appearing online in The FASEB Journal suggests that a diet high in fat and sugar actually switches on genes that ultimately cause our bodies to store too much fat. This means these foods hit you with a double-whammy as the already difficult task of converting high-fat and high-sugar foods to energy is made even harder because these foods also turn our bodies into "supersized fat-storing" machines.

Tomorrow morning Venice will sink under a maximum tide predicted to reach 1.30 meters above average sea level. The event will occur at 8.35AM, a time when Venetian residents are in the streets trying to bring children to school or to reach their workplace. You can see the predicted evolution of the tide in the graph below, where the red curve shows the time variation of the season's average, and the blue one the actual prediction for tomorrow. The peak of 130 cm above average sea level is predicted to occur at 8.35AM -which is 2.35AM in New York, or 5.35PM in Tokyo.

What is the size of the universe? How heavy is it? How big can black holes grow? How small are subatomic particles? How many orders of magnitude will I cross when going from the microscopic quantum world to the edge of the universe? Are we humans somewhere in the middle between all these length scales?