Obama praises US cities, states, for climate change stand

Former US president Barack Obama praised US states and cities for maintaining measures against climate change in a fresh jab at his successor's decision to quit the Paris accord.Addressing a crowd of 6,000 in Montreal Tuesday, he argued that his administration had been able to show that greener policies were good for economic growth."When it comes to the threat of climate change, we have shown that environmental sustainability and economic progress are not contradictory but are complementary," h