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Believe it or not, cocaine is a very common environmental contaminant - it is well known that it is present on many bank notes. (Photo: Pixabay)

1 in 10 people have cocaine on their fingertips: study

Believe it or not, cocaine is a very common environmental contaminant - it is well known that it is present on many bank...

25 March 2018 12:21 PM IST

Whereas batteries can hold a large amount of energy they take hours to charge, supercapacitors hold less energy and charge in seconds.

New super batteries could charge phones in seconds

The only issue is while they are faster charging than traditional batteries, they have a shorter overall life.

12 Dec 2016 12:26 AM IST