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.
Labor's policies have to get a lot more ambitious if they want to see real reductions in emissions.
We've been here before. In fact we've been going round in circles on climate policy for decades, while the temperature (of the debate, as well as the planet) climbs ever higher.
The former prime minister has changed his mind yet again on the Paris targets, this time because he is under pressure in his seat of Warringah.
The original New Deal caused a "great acceleration" in carbon emissions. How will a Green New Deal forge its own legacy?
In the fight against climate change, cities are now seen as having a major role to play. An ongoing study examines the effectiveness of the adaptation and mitigation plans of 126 coastal cities.
These efforts should include trying to turn around the United States' decision to leave the Paris agreement, Sharma told the Coalition for Conservation on Tuesday night.
Business leaders are beginning to take the global climate issue seriously by setting science-based targets to reduce greenhouse gas emissions.
Agriculture needs to cut its greenhouse gas emissions, yet we must also find a way to produce more food if we are to feed 10 billion people by 2050. A "just transition" could help make that happen.
Australia's government insists it is on track to surpass its emissions reduction commitments under the Paris Agreement. But while that may be true, it will only happen with some clever accounting.
Canada's top-down approach to designing its climate policy has failed. It needs to find ways to engage with individuals.
Three years after the Paris Agreement, negotiators have finally agreed (most of) the rules for its implementation. But there is still no way to compel countries to deepen their climate ambitions.
For the second year in a row global greenhouse emissions from fossil fuels have risen, putting 2018 on course to set a new record, according to an annual audit from the Global Carbon Project.
We may only have 12 years to stop climate change and the landmark Paris Agreement of 2015 seems more in doubt than ever. What can we hope to come out of COP24?
As leaders and negotiators head to Katowice, Poland for this year's round of UN climate talks, it is clear that there is still much work to be done to meet the goals set in Paris three years ago.
At a time when the rules-based trading system is being shredded and the Paris Agreement risks unravelling, it is vital that the G20 meeting between the two superpowers is a constructive one.