This working paper details and analyzes a global, transparent, and geographically allocated carbon dioxide emissions inventory for commercial aviation for calendar year 2018.

The second in its series, the 2019 Exponential Roadmap is complemented with a high-ambition narrative, Meeting the 1.5°C Ambition, that presents why the world must aim to hold global average temperature increase to just 1.5°C.

Vulnerable developing countries lead world on climate ambition: UN report. Developing countries are leading the world in responding to climate change, according to a new report which calls for bold, urgent action to limit the impacts of global warming.

Argentina has shown many positive developments in the climate space since 2015, but Argentina’s climate commitment in 2030 is not consistent with holding warming below 2°C, let alone limiting it to 1.5°C as required to achieve the Paris Agreement.

This study assesses the fuel efficiency of U.S. airlines on domestic operations in 2017 and 2018. Revenue passenger miles (RPMs) increased 10% and departures increased by 4% from 2016 to 2018. Fuel efficiency in terms of RPMs per gallon of fuel consumed improved by 3%.

New report provides first-ever estimate of health care’s global climate footprint, calls for zero emissions.

Reducing CO2 emissions from all new cars and accelerating the uptake of zero emission models is essential to prevent a climate emergency. This is not a silver bullet - local and national policies need to reduce car ownership and use and promote active travel and shared mobility, which are also important.

Cities worked together to summarize the most relevant information and actionable findings related to the latest science on 1.5°C.

To achieve the Paris Agreement goals and limit global temperature rise this century to 1.5°C, the global economy must be rapidly transformed. A carbon price is needed to incorporate climate change costs into economic decision-making to significantly reduce U.S. greenhouse gas emissions, particularly in the electricity sector.

Non–carbon dioxide (CO2) greenhouse gas (GHG) emissions are a substantial driver of climate change and have significant negative impacts on air quality, human health, and food production. In 2014, the last year with official data, non-GHG emissions in China were greater than total GHG emissions in Japan or Brazil.