Today on New Scientist: 14 January 2013







Activist's death sparks open-access tribute on Twitter

Hundreds of researchers have been offering free access to their work in tribute to internet freedom activist Aaron Swartz, who committed suicide on Friday



Exploding microchip could make arms dumps safer

Shrapnel and bullets can set off huge explosions if they hit weapons stores. But microchip-based detonators could help keep them safe



The hologenome: A new view of evolution

Far from being passive hangers-on, symbiotic microbes may shape the evolution of the plants and animals that play host to them



White House uses Death Star request to plug science

The White House has politely declined to build a version of the planet-destroying space station from Star Wars but took the opportunity to promote science



Wolves bite back in the human world

Grey wolves are an evolutionary success story, giving rise to the domestic dog 10,000 years ago and now rebounding from centuries of persecution



Mariko Mori: From stone circles to stardust

The artist's new exhibition tethers human history to the life of the entire cosmos



Why we called off hunt for ancient Antarctic life

Geoscientist Martin Siegert says that drilling through 3 kilometres of ice to reveal the secrets of an entombed lake was never going to be easy



Give video games a sporting chance

Traditional fans will turn their noses up at e-sports, but they risk missing some compelling action



Benefits of emissions cuts kick in only next century

Even rapid action now to curb emissions will bring only modest results this century, but the earlier we act, the greater the eventual rewards



Video games take off as a spectator sport

Professional gaming has been huge in Asia for years, and improved technology means it is now going global




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