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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...
Protests in Colombia and South Africa reveal link between inequality and popular uprisings
Ongoing anti-government demonstrations in Brazil. The Women’s March on Washington. Protesters in Mor...
Populism is still a threat to Europe — here’s how to contain it
Has the populist tide sweeping Europe crested?Six months ago, many European leaders worried that the...
Can we ditch dark energy by better understanding general relativity?
A renewed suggestion that dark energy may not be real — dispensing with 70% of the stuff in the univ...