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New Greenland telescope is up and running

A new radio telescope in Greenland is looking for signs of black holes, and preliminary data are already coming in.

Future cities could be lit by algae

Bioluminescent algae are a sustainable light source.

How smart is your city?

Smart cities are much more than technology and big data. It’s about using technology sustainably and in a way that improves the lives of the people that live there.

How your WiFi can protect against intruders

Research in Denmark could turn your regular WiFi network into a burglar’s worst nightmare: An intruder alarm that can see through walls.

How to make greener biofuels

A combination of two well known methods could produce a greener, more efficient, biofuel.

Smartphone sensor can detect dirty water

Using DNA-Magnetic particles we can detect single cells of E.coli bacteria in drinking water at record speed.

Optical computers light up the horizon

Moore’s Law is dead: long live the laser!

VR doesn’t measure up to nature

Virtual reality can provide nature experiences for some people, but so far the technology isn’t very satisfactory. “Going for a walk" with VR glasses made study participants cyber sick.

Bird senses can improve drone navigation

South American oilbirds combine echolocation and extremely sensitive vision to find their way through dark caves. Decoding how they do this could help develop autonomous drones.

Heavier cars can make traffic more dangerous

The probability of being killed or severely injured in a traffic accident is about 40 percent lower if you drive a new car. But new cars are often more massive and pose a greater threat to other road users.

More geo-engineering, please!

Geo-engineering could help us solve the problem of global climate change, but only if we do it in a sustainable way and tackle the problem at the source.

From monstrosity to laptop: the story of the personal computer

What began as a “bizarre” fantasy has now become reality.

Today's selected stories