Beyond the headlines from the annual U.N. climate conference, progress in advancing the global climate agenda relies on the behind-the-scenes efforts of technocrats over years.
Below are some of the steps forward at this year's COP27 summit concluded at the weekend in Egypt:
THE SHAPE OF CARBON MARKETS
Countries have been negotiating how to make international trading in carbon offsets work since the 2015 Paris Agreement, and the launch of the system is likely to be several years off as the debate continues into 2023.
Offsets allow countries or companies to pay others to cut greenhouse gas emissions to make up for their own.
By the end of the first week of COP27, officials had agreed to put off decisions on which projects - from wind farms to tree planting - should be eligble to generate carbon offset credits.
In the second week, countries made progress on setting out how country-to-country trading would work as well as clarifying some aspects of how countries could authorise a project within their borders to sell credits abroad, Laura Albuquerque, a senior manager at consultancy WayCarbon, said.
Negotiators also finalised most of the guidelines for how carbon credits under an old offset trading system could be brought in line with the new rules, she said.
But many decisions were pushed to next year or later, including whether avoided emissions from deforestation or other sources should qualify for carbon credits.
"The texts provide key elements to implement high-integrity carbon markets that can help deliver net-zero ambitions for all countries," said Dirk Forrister, chief executive of the International Emissions Trading Association.
"We expect further decisions at COP28 and beyond."
'TOO LITTLE, TOO LATE' ON ADAPTATION
Developing countries hit by climate impacts say the annual U.N. climate negotiations focus too much on measures to cut emissions, and not enough on adaptation to the consequences of global warming, such as sea level rise.
At last year's COP26 U.N. summit, countries agreed to double the amount of adaptation financing by $40 billion by 2025. While the world is falling short of that goal, few expected the issue to be advanced this year in Egypt.
"'Too little, too late' is what developing countries are arguing," as climate change is already exacerbating flood events, drought and sea level rise, Maarten Van Aalst, director of the Red Cross Red Crescent Climate Center, said.
Some progress was made toward defining a "global goal on adaptation," which in addition to finance would likely include a wider array of tools and cooperation platforms to help countries to adapt. That could include humanitarian relief, the transfer of technology and early warning systems for climate disasters.
Rather than reaching a final decision, countries this year adopted a framework that laid out the questions that need answers to define that goal at a future COP.
Van Aalst called the framework "a pretty technical step forward" and a "helpful piece of progress."
AGRICULTURE AND FOOD LATE-COMERS TO THE DEBATE
Food is responsible for one-third of global greenhouse gas emissions.
But discussions on how to curb those emissions are relatively new within U.N. climate negotiations.
Adopted in 2017, the Koronivia Joint Work on Agriculture (KJWA) has held workshops to address climate-related agricultural issues including best practices in livestock, soil management, and water use. The work also deals with food security and the economic impacts of global warming.
As the initial mandate expired, countries at COP27 authorised the KJWA work to continue for another four years.
Countries need to decide how to move from talking in workshops to pushing for measures to be implemented in practice, for example, in ways to help governments meet national emissions-cutting targets, said Bernadette Fischler, head of advocacy at World Wildlife Fund (WWF) UK.
More than 100 organisations including WWF and the Environmental Defense Fund signed a letter urging COP27 negotiators to expand the scope of Koronivia to include consumption and waste, but Egypt talks kept the narrow focus on agriculture.
Fishler said the emissions from the overall food system need to be reduced if the world is to succeed limiting global warming to 1.5 degrees Celsius above preindustrial temperatures, the level beyond which scientists say the impact of climate change will become far more devastating.
"You can just phase out fossil fuels, you can't phase out food," she said.
(Reporting by Jake Spring and Shadia Nasralla; Additional reporting by Kate Abnett; Editing by Katy Daigle and Barbara Lewis)