World’s first battery that charges on air

The world’s first battery fuelled by air, which could provide up to 10 times the energy storage of designs currently available and could power electric cars, mobile phones and laptops, has been unveiled.
Scientists say the revolutionary ‘STAIR’ (St Andrews Air) battery is charged in a traditional way but as power is used or ‘discharged’, an open mesh section of the battery draws in oxygen from the surrounding air.

Apple warns of electrical shocks from iPod, iPhone

Technology giant Apple has warned of possible small and quick electrical shocks from the headphones while using iPods and iPhones.
According to the company, people could experience the electrical shock when they are using headphones to listen to these devices in areas where the air is very dry.