Agence France-Presse: US plans to reduce greenhouse gas emissions fall short of what is needed, climate change experts said after talks with the European Commission in Brussels. “The US objectives are not strong enough, they have to make their commitments stronger,” said Nicholas Stern, a British former world bank chief economist whose 2006 Stern Review put the economic case for green policies. Lord Stern voiced optimism that the entry onto the world stage of US President Barack Obama could only …