Measuring time using the Earth’s rotation was always an imprecise business, so now we do it using the ‘tick’ of an atom

This technology allows you to scroll to your heart’s content while killing time at cruise altitude

Amazing answers to your curious questions

£979 from dji-retail.co.uk DJI has pushed the weight of this drone to the absolute limit, officially weighing just a tenth of a gram less than the 250g ceiling that introduces tighter restrictions. It

It’s a long process, but it’s worth it.

T3 ’s top physicist waves his Geiger counter at your problems