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Global food production is one of the key societal challenges of the 21st century. A growing world population with the simultaneous upheaval caused by climate change demand new methods of cultivating crops in regions with unfavourable climates. A closed greenhouse is a good way of growing food in deserts and low-temperature regions – as would be the case on missions to the Moon and Mars – as it permits harvesting regardless of the weather, the Sun and specific seasons. In a closed greenhouse, water consumption is immensely reduced and there is no need for pesticides and insecticides. This kind of model greenhouse will set off for the Antarctic at the end of 2017 for a year of long-term testing under extreme conditions as part of the EDEN-ISS project. Unparalleled elsewhere in the world, this Antarctic greenhouse was presented to the public for the first time at the Bremen site of the German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt; DLR) on 7 July 2017.

“DLR is pursuing application-oriented research within the EDEN-ISS project. Its purpose is to bring fresh impetus to food production on Earth and for human space flight,” says Hansjörg Dittus, DLR Executive Board Member for Space Research and Technology. “In doing so, we are advancing the cause of a key technology that will provide a fresh diet to inhabitants of climatically harsh regions – in our case the Antarctic – as well as to astronauts on future long-term missions.”

A year on the eternal ice.

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In contrast to other particles of this type, in which the three quarks perform an elaborate dance around each other, a particle with two heavy quarks is expected to act like a planetary system, where the heavy quarks are like two stars orbiting one around the other, with the lighter quark orbiting around this binary system.


Scientists have detected a new particle at the Large Hadron Collider at Cern.

The discovery will help researchers learn more about the so-called “strong force” which holds the centres of atoms together.

The existence of the new particle was theoretically predicted but this is the first time it has been identified.

Yellowstone National Park, which covers parts of Wyoming, Idaho and Montana, lies on top of a supervolcano that could effectively wipe out the United States if it were to explode. The last time it did, 640,000 years ago, it expelled 240 cubic miles (think about that) of rocky debris into the sky.

Early Thursday morning, residents of southern Montana feared the worst when a 5.8 magnitude earthquake shook the region. Though its epicenter was only 230 miles from Yellowstone, the United States Geological Survey (USGS) says the seismic activity was not irregular, and the supervolcano is not expected to erupt anytime soon.

Related: Yellowstone supervolcano hit by hundreds of earthquakes.

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Researchers have recently discovered two different types of memory use completely different processes in the same nerves, opening the way for a new pharmaceutical solution for treating anxiety and post-traumatic stress disorder (PTSD).

The find challenges earlier research that had suggested memories of traumatic events used the same nerves in the same ways, making them impossible to physically distinguish.

A team of scientists from Columbia University Medical Center (CUMC) and McGill University analysed neurons from a marine snail called an Aplysia in order to test a hypothesis explaining why memories of incidents surrounding a bad experience can themselves trigger anxiety.

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Amazon’s Alexa is gaining knowledge at a rapid clip.

The voice assistant now has more than 15,000 “skills” (Amazon’s term for voice-based apps), nearly all of them created in the little more than two years since Amazon opened Alexa to outside developers. That is boatloads more than the number of apps available for Alexa’s chief rivals, Google Assistant and Microsoft’s Cortana, according to recent Voicebot data. And all those skills make Alexa able to do more tasks than its peers.

But Amazon’s “arms-wide-open” strategy means that, for every useful skill its assistant gains, it gets three skills dedicated to telling you egg facts. What’s more, Alexa is the dumbest of the major assistants when it comes to answering general knowledge questions, according to a recent study.

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