The Open University is claiming a world record for the number of iTunes downloads - as the first to reach 20 million.
Universities around the world are now distributing material through the iTunes U educational area of the online service.
The global figure for downloads from iTunes U has reached 250 million.
"The way people want to learn is changing," says Open University vice-chancellor, Martin Bean.
The video says it all: A tideline of tar balls, off Horn Island Pass south of Pascagoula, Mississippi - blobs stretching as far as the eye can see.
While a good portion of the country was gearing up for the U.S.-Ghana World Cup game, workers and residents in the Gulf were coping with day 68 of the oil spill - the day that the oil slammed into the as-yet-little-affected Mississippi coastline. Here's the raw footage:
Sitting up straight is not the best position for office workers, a study has suggested.
Scottish and Canadian researchers used a new form of magnetic resonance imaging (MRI) to show it places an unnecessary strain on your back.
They told the Radiological Society of North America that the best position in which to sit at your desk is leaning back, at about 135 degrees.
Experts said sitting was known to contribute to lower back pain.
Data from the British Chiropractic Association says 32% of the population spends more than 10 hours a day seated.
Sunday is set to be the hottest day so far this year and temperatures may hit 31C, the BBC weather centre predicts.
The previous high for 2010 was on 24 May, when it reached 28.8C at Heathrow Airport.
The prediction comes as millions are set to watch England play Germany in the World Cup and Glastonbury festival-goers bask in the sun.
The research on more than 200,000 women from nine European countries found doing household chores was far more cancer protective than playing sport.
Dusting, mopping and vacuuming was also better than having a physical job.
