Scientists warned on Earth Day that we need to leave most of our remaining fossil fuel reserves in the ground to prevent climate change disaster.
Rajendra Pachauri has denied any wrongdoing, and claims that his email account and cellphone were hacked.
Many environmentalists criticise geoengineering for suggesting a simple techno-fix for global warming. But it may have a more sinister side.
Some climate change deniers in the United States Senate have realised they are increasingly out of step with the public.
A recent report painted a worst-case scenario of a rise of up to 5.1°C by 2090 if there are no actions taken to cut greenhouse emissions.
2014 was the hottest year on record, and new research shows humanity is exceeding safe levels of half of the systems that are needed to support life.
Experts say human-driven climate change is the main reason for last year being the most scorching on record.
It is the world’s most scenic slum ... Children here are nine times more likely to die before their first birthday.
It’s a new year and we are all thinking of ways to fix ourselves. Our environmental reporter has a simple 15-step plan to help fix the world in 2015.
2014 will be remembered as the year politicians defeated climate scientists and solidified weak climate change targets, writes Sipho Kings.
Forget the UN, social justice movements offer the only viable solution to global warming.
The UN pushes for a deal that sets out a compromise between emerging and developed nations but some environmental groups lament its weakness.
Displacement, climate change and entrenched abuse block the support women need to enter the agriculture sector, and to be able own land.
During secret negotiations, the US pledged to cut its emissions by 28% by 2025 and China promised to reach a peak in emissions by 2030.
China and the US will sign a deal that will ensure negotiations on targets for climate change are agreed on at next year's climate talks in Paris.
A UN climate panel said greenhouse gases were at its highest since the time of mammoths and mastodons, and time is running out to limit warming.