US weighs banning laptop computers on international flights
US Homeland Security John Kelly said Sunday that he was considering banning laptop computers on international flights into and out of the country, amid signs of "a real threat."
May 28, 2017, 19:17 PM ISTNew technology to make cellphone batteries cheaper
Lithium-ion batteries, ubiquitous in devices ranging from cell phones to laptop computers and electric cars, may soon have a cheaper and sustainable alternative as researchers have shown that potassium can work with graphite in a potassium-ion battery.
Oct 07, 2015, 12:34 PM IST