John Kerry

Secretary of State warns climate change has been a contributory factor to terrorism and unrest in Syria and Nigeria

Businesses rally behind calls for global climate deal at Paris Summit

Governor Jerry Brown signs executive order, as Secretary of State John Kerry says climate change will become a strategic priority for US government

UK Foreign Secretary delivers first speech on climate change, outlining threat to security and economic opportunity during Boston visit

Reports suggest utilities may face mandated cuts of up to 25 per cent that could require investments in clean energy

US Secretary of State calls for action to protect 10 per cent of world's oceans in conservation zones

"The window of time is still open for us to be able to manage this threat. But the window is closing"

US Secretary of State attacks climate sceptics and says window to tackle climate crisis and realise economic opportunities is closing

Countries agree to tackle coal-fired power stations and heavy-duty vehicles under new bi-lateral accord

"Do we stand by while China invests nine per cent of its gross domestic product, and Europe invests five per cent in infrastructure, and we barely invest two per cent?"