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What would be the impact of summers without ice in the Arctic?

Forecasts suggest the amount of ice in the Arctic this year is likely to retreat to its lowest extent on record. Many scientists predict that the Arctic will be completely free of summer ice within 50 years. Richard Hollingham reports.

Wire-free power

Could wireless electricity be a reality soon?

Computer curse

The man who wrote the first ever computer virus

Broadband in a backpack

Mobile internet connection from almost any location

Crowd control

New technology for predicting crowd behaviour launches

Beaver Receiver

Why New Yorkers are sending texts to river wildlife

'Barcodes' tackle bush meat trade

'Barcodes' tackle bush meat trade