Glow in the dark tampons identify sewage pollution in rivers

The natural, untreated cotton in tampons readily absorbs chemicals commonly used in toilet paper, laundry detergents and shampoos. These chemicals - known as optical brighteners -are used to enhance whites and brighten colours, ...

Colombia transforms old tires into green housing

The highlands around the Colombian capital are scattered with small buildings that look like out-of-place igloos but are in fact innovative houses made from the tires that litter the country's roads.

Cassini: Return to Rhea

After a couple of years in high-inclination orbits that limited its ability to encounter Saturn's moons, NASA's Cassini spacecraft returned to Saturn's equatorial plane in March 2015.

Tesla shares jump on Musk 'tease' in tweet

Tesla Motors shares jumped Monday after co-founder Elon Musk tweeted that the company would unveil as "major" new product line next month, leaving analysts guessing.

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