Williams won last year's event when it was held on blue clay -- an unpopular experiment that was later banned by the tennis authorities -- but she has not played in a final on red dirt since 2002.

CNN: Sharapova: In love and in the final

On 17 March 2005, Andrzej Udalski, professor of astronomy at Warsaw University, Poland, and leader of the Optical Gravitational Lensing Experiment (Ogle), noticed that just such an event was about to occur near the centre of our galaxy.

BBC: Artist's concept of a distant world (BBC)

The Global Chemistry Experiment (Water: A Chemical Solution), a cornerstone event of the International Year of Chemistry 2011, is now one of the largest chemistry educational experiments done.

UNESCO: Social and Human Sciences

"Poring over the data from such an event to see what systems worked and which didn't - that is a great experiment in the the making, " said Mr Rattner.

BBC: Intel to use London as a smart city lab

In one lab experiment, researchers paired volunteers who had never met and had them take turns discussing an interesting personal event that occurred in the past month.

CNN: A New Year's resolution for the workplace

In any event, the presence of mouse DNA in these cells must be considered as the source of contamination reported in this experiment.

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