Month: <span>December 2011</span>

Melting Glaciers Muck Up Earth’s Gravitational Field

Clever use of gravity data shows that glacial retreat really is a global phenomena.

SINGAPORE—Photographs never quite capture the sparkling blue tint of glacial ice, so when I visited the Perito Moreno glacier in Patagonia on a backpacking trip through South America some years ago, I was happy to get this camera angle: the blue of the Argentine flag gives you a sense of what the blue of the […]

By George Musser One Comment 4 min read Continue reading

Proving You Are Where You Say You Are

Philandering spouses and students playing hookey, beware: quantum cryptography may make it impossible for you to hide your location.

SINGAPORE—When a speaker brings a tangle of garden hoses, a bottle of water, and a towel to the podium, you know it’s going to be a fun talk. Computer scientist Harry Buhrman of the Centrum Wiksunde & Informatica in Amsterdam recently visited Singapore to help celebrate the fourth anniversary of the Centre for Quantum Technologies. […]

By George Musser 0 Comments 6 min read Continue reading

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