At annual World Economic Forum, US president boasts of 'great American comeback' but draws fire for saying little on environment, a focus of this year's gathering

'Our children and grandchildren face deep misery and death unless we act,' warns letter signed by figures from communities around the world

NASA expert says planet as a whole is probably hottest it has been in 11,500 years, meaning it could be warmest period since dawn of civilization

After scientists warned catastrophe may be rapidly becoming unavoidable, a teenage girl led young activists to force governments to start paying attention

Russian leader, in annual news conference, claims 'party that lost 2016 election is continuing the fight by other means'

Thousands of firefighters battle bushfires amid 41.9 degrees Celsius heatwave, with authorities warning extreme weather conditions could get even worse

Already unprecedented bushfire season sees average nationwide temperature hit a blistering 105.6 Fahrenheit, breaking 2013's record of 104.5

Delegates from almost 200 countries issue statements, but leave one of the biggest issues in global crisis for future summits

Environmental groups slam current proposal being weighed at Madrid conference, say it could undo some commitments of Paris Agreement

Antonio Guterres dismisses as 'nonsense' claims that 'economic growth and tackling climate change are incompatible' at UN conference