USA

President gives clearest indication yet that he is deeply sceptical about case for controversial tar sands pipeline

Governor Jay Inslee publishes plan to introduce cap-and-trade scheme from mid-2016

Texan city reveals how cross-industry co-operation can help slash waste levels and save money

Leading green business-focused think tanks to join forces in a bid to better promote market-led responses to climate change

Obama hopes to sustain global warming momentum next month

Hero Prins of Climate-KIC explains how the recent flurry of new international climate targets is good news for entrepreneurs

The US retail giant reveals how relatively simple energy-efficiency measures have helped cut energy bills and carbon emissions

Lima Summit enjoys encouraging progress, but poorer nations remain frustrated about slow progress on climate funding pledges

EU says mandatory carbon emissions cuts should be set for all countries, whereas US wants individual countries to be free to adjust the scale and pace of reductions

Joel Makower speaks to GRI chief executive about the future for the influential environmental reporting initiative