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Conflict & Justice

How ISIS lost Sinjar

The so-called Islamic State has lost control of a key town on the main road between the territory it occupies in Iraq and Syria. The town of Sinjar, in Iraq, fell Friday to a coalition of Kurdish and other militias, backed by US airpower. 'Liberated' Sinjar looks like a ghost town.

Science, Tech & Environment

For Obama's top science guy, the climate outlook is partly sunny


The US and the rest of the world failed to forge an ambitious plan to tackle the climate crisis six years ago in Copenhagen. Since then the crisis has only gotten worse, but going into the next global climate summit in Paris, President Obama's top science adviser John Holdren is hopeful that world leaders are finally ready to step up to the challenge of avoiding catastrophic climate change.