A few selections from the BBC's 100 things we didn't know last year:

2. There are 200 million blogs which are no longer being updated, say technology analysts.
7. The lion costume in the film Wizard of Oz was made from real lions.
27. Just one cow gives off enough harmful methane gas in a single day to fill around 400 litre bottles.
28. More than 90% of plane crashes have survivors.
44. For every 10 successful attempts to climb Mount Everest there is one fatality.
69. Humans were first infected with the HIV virus in the 1930s.
76. In Bhutan government policy is based on Gross National Happiness; thus most street advertising is banned, as are tobacco and plastic bags.
79. The best-value consumer purchase in terms of the price and usage is an electric kettle.
88. Nelson Mandela used to steal pigs as a child.