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Caught between police and gangs, Rio de Janeiro residents are dying in the line of fire
In Rio de Janeiro, where murder rates this year have soared to their highest levels in a decade, vio...
Biofuel breakthroughs bring ‘negative emissions’ a step closer
The use of biofuels helps reduce human greenhouse gas emissions. That’s one reason why some petroleu...
Can the world’s megacities survive the digital age?
Today, megacities have become synonymous with economic growth. In both developing and developed coun...
Healing Colombia’s war
“The armed conflict took so much from us”, one young farmer and communications activist tells us, mo...
Otto John: new light shed on legendary Cold War double defector
Imagine if the director of the American FBI or Britain’s MI5 were to defect to a hostile state. Thin...