Buffett donates $1.93bn in shares to charities
The billionaire investor Warren Buffett has donated $1.6bn to the charitable foundation created by Microsoft founder Bill Gates and his wife Melinda.
In all, he donated shares worth $1.93bn to five foundations.
The rest went to foundations set up in the name of Mr Buffett's late wife, Susan, and their three children.
Mr Buffett, who owns the investment company Berkshire Hathaway, pledged in 2006 to give away 99% of his wealth.
This year's donation is higher than the figure of $1.5bn donated in 2009 because Berkshire Hathaway has improved its performance.