Cities represent an increasingly powerful force in global politics – but they're still constrained by the agendas of slow-acting states.
Nations are struggling to agree on how international carbon trading should work under the Paris accord. A weak result would undermine global efforts to fight climate change.
People are more likely to deny climate change if they're inclined toward hierarchy, have lower levels of education or are more religious. But the strongest predictor of denial is a person's politics.
Some of Australia's biggest property companies are making ambitious emissions-reduction pledges – but how well are they really doing?
Individual actions to reduce emissions are important in two ways. First, they have an immediate impact, and secondly, adopting low-carbon life choices sends a clear message to political leaders.
The IPCC report says extreme sea level events that used to hit once a century will occur once a year in many places by 2050. This situation is inevitable, even if emissions are dramatically curbed.
Scott Morrison told reporters he discussed climate change with his daughters, aged 10 and 12, but didn't share, unfortunately, the girls' views on the subject.
Guterres wanted world leaders to tackle subsidies for fossil fuels, implement taxes on carbon, and end new coal power beyond 2020. None of this happened.
The summit was supposed to get global climate action back on track. But despite a few bright spots, the urgent action needed to avoid a climate catastrophe looks a long way off.
Ahead of the UN climate summit, we take stock of the world's best and worst performers on climate action - including some surprise success stories.
Scientists from all over the world agree that the impacts of climate change will get worse, unless action is taken now.
The use of fossil fuels has to end and be replaced by sustainable energy as quickly as possible. The Paris Agreement was a good start but states continuing to work together is key.
As a wealthy nation with global diplomatic and multilateral influence, Canada is among a small subset of nations uniquely positioned to act individually and collaboratively on climate change.
New Zealand is small and generates a tiny fraction of global greenhouse gas emissions, but investment in cutting emissions is important and could influence other, larger countries.
A warming climate will affect the way waves hit over 50% of the world's coastlines, increasing erosion and the risk of flooding.
Sydney has joined more than 600 local governments around the world – as well as the national governments of the UK and Canada – in putting the climate crisis at the heart of all policy decisions.
The global focus on plastic pollution isn't a distraction from other planetary issues.
Though they were against climate action, the neocons showed that diplomacy can successfully be ignored when facing a huge threat.
Mexico is a leader in climate change action in the developing world. But renewing its commitment to oil may stymie further progress.
Nation-wide climate legislation would not only help reduce our carbon emissions, but also boost economic growth.