Extreme weather is more common than ever.
Mohamed Alhwaity / Reuters
The scientific case rests on six key observations.
Blue-sky promises? The Paris climate deal is unlikely to be legally binding.
The Paris climate deal comes 'pre-packaged' by the promises nations have already made. But the issue of global climate finance could still scupper the talks.
A worker at a coal power plant in China.
The greenhouse gases that cause climate change will take centre stage at the upcoming Paris climate talks. What are they and what are their effects?
Protests at climate talks in New York in 2014.
1988 marked the first call for climate action from the scientific community. Nearly 30 years later it's been a bumpy ride.
Coral reefs are vulnerable to both rising temperatures and acidifying oceans.
Coral image from www.shutterstock.com
It should not be assumed that policies intended to deal with the climate will simultaneously stop ocean acidification.
The stage is set for a climate agreement - although it may be political rather than legal.
Probably not, but that might be for the best if it encourages countries to be more ambitious in their commitments, rather than playing it safe to avoid falling foul of legal obligations.
The 2015 "Conference of Parties" in Paris will bring together 195 nations rich and poor as well as the EU to try and hammer out a definitive climate agreement. So how does it all work?
The best way to ensure emissions reductions are permanent is to transform the energy sector.
Carbon emissions image from www.shutterstock.com
58 countries have submitted their climate targets ahead of international talks in Paris. We know the numbers, but not all efforts to combat climate change are equal.
Bonn in June: just a few steps away from the big show in Paris later this year.
It's pledge season: countries are beginning to submit carbon reduction commitments for the Paris climate talks later this year. What's the US doing and can it meet its targets?
We cross the 2C threshold at our peril.
2C is the officially agreed safe limit for global warming, but a recent expert finds 2C is still in the danger zone.
UN lead climate negotiator Christiana Figueres (second from left) has been hailed as having the dynamism needed to drive the Paris talks.
The much-hyped 2009 Copenhagen climate summit yielded only a flimsy accord. But, as Nick Rowley writes in part 2 of his three-part essay on the 2015 Paris climate talks, there are several reasons why this year won't see another flop.
Countries are working towards meetings in Paris in November that could see the first global climate deal since the Kyoto Protocol.
Ahead of meetings at the end of this year in Paris, countries will submit draft contributions for a global climate deal. The goal: reducing greenhouse gases beyond 2020, and ultimately keeping global warming below 2C.