Airships can patrol the upper atmosphere, monitoring the ground or peering at the stars for a fraction of a cost of satellites, according to a new report. All that's needed is a prize to kick-start innovation.
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Chinese physicists say quantum key distribution is possible through clear ocean water at distances of up 125 metres and at data rates capable of sending a secure video feed.
If we want to communicate with other civilisations, it turns out that the laws of physics, the nature of interstellar space and a little common sense place surprisingly strict bounds on how this communication can take place.
Computer scientists have used the pattern of social media communication in Syria to reveal the structure of opposing forces in the civil war.
Study the way people make mobile phone calls in metropolitan areas and you can see a city breathe, say computer scientists.
A small group of special individuals could act as an early warning system for the next epidemic. Their special power? Super-spreading disease.
"For the first time, we will identify continents and oceans—and perhaps the signatures of life—on distant worlds," says NASA in its 30-year vision for astrophysics.
Mining the mobile phone data from 10 million people over 4 years reveals the subtle changes that occur in the flow of information when disaster strikes, say network scientists.
An exotic new form of propulsion could send a spacecraft to Uranus in the time Galileo took to get to Jupiter less than half as far away, say rocket scientists.
A smartphone app inspired by Greek mythology has the potential to help the blind navigate indoors where GPS is unavailable.