The richest one percent of the world's population are responsible for more than twice as much carbon pollution as the 3.1 billion people who made up the poorest half of humanity during a critical 25-year period of unprecedented emissions growth, according to a new study by the aid group Oxfam. The report, "Confronting Carbon Inequality," is based on research conducted with the Stockholm Environment Institute and has been released as world leaders prepare to meet at the UN General Assembly to discuss global challenges including the climate crisis. The report assesses the "consumption emissions" of different income groups between 1990 and 2015—the 25 years when humanity doubled the amount of carbon dioxide in the atmosphere. It found:

The Innu Nation of Labrador announced Oct. 6 that it is seeking $4 billion in damages from Hydro-Quebec over its mega-dam on the Upper Churchill River. The suit, filed in the Supreme Court of Newfoundland & Labrador, seeks compensation for the theft of ancestral Innu land in 1967 to build the Churchill Falls hydro-electric project, leading to devastation of their community's culture and way of life. "The impact of Churchill Falls has been felt across generations of Innu. What happened, it was not right. Our elders deserved better treatment then, and we demand better treatment now," said Grand Chief Etienne Rich. He charged that Hydro-Quebec and the provincial utility in Newfoundland, now called Nalcor Energy, "stole our land and flooded it in order to take advantage of the enormous hydro potential of the Churchill Falls. This project was undertaken without consulting us and without our consent."

Six Portuguese young people have filed a legal complaint at the European Court of Human Rights  (ECHR) in Strasbourg, France, accusing 33 countries of violating their right to a secure future by failing to take action to mitigate the climate crisis. The youths aged 12 through 21, represented by the Global Legal Action Network (GLAN), are targetting countries whose policies on carbon emission reduction they say are too weak to meet the 1.5 degrees Celsius goal of the Paris Agreement, citing the country ratings of the Climate Action Tracker. Named in the suit are the 27 European Union member states, as well as the United Kingdom, Switzerland, Norway, Russia, Turkey and Ukraine.

Reportedly at the direct instigation of President Donald Trump, the US State Department has ordered a suspension of aid to Ethiopia over its move to begin capturing water behind a controversial new mega-dam on the Blue Nile that has been opposed by Egypt and Sudan. A State Department spokesperson said the decision to "temporarily pause" some aid to Addis Ababa "reflects our concern about Ethiopia's unilateral decision to begin to fill the dam before an agreement and all necessary dam safety measures were in place." The statement said the decision was taken by Secretary of State Mike Pompeo "based on guidance from the president." The freeze could affect as much as $100 million in aid. The reservoir behind the Grand Ethiopian Renaissance Dam (GERD) began filling in July, over the protests of Egypt and Sudan. (Al Jazeera, Sept. 3; AP, Sept. 2)

President Salva Kiir declared a state of emergency Aug. 13 in South Sudan's central Jonglei and Pibor regions following flooding and communal violence. More than 200,000 people have been forced from their homes as water levels rose by 1.5 meters in some areas after heavy rains. Flooding has also affected neighboring Upper Nile and Unity states. The government has called on humanitarian agencies to provide immediate aid, but inter-communal unrest in Jonglei and Pibor—in which aid workers have been killed—will complicate operations. The conflict between Lou Nuer and Murle ethnic militias has displaced 100,000 people since the beginning of the year. They will miss the current planting season—deepening their food insecurity. Pre-positioned food stocks were also looted in the violence. South Sudan is in the lean period before the November harvest, and "emergency" levels of food need are widespread. The US-funded Famine Early Warning System Network is anticipating their highest "catastrophe" level in some areas of Jonglei affected by fighting, and says "urgent and sustained food assistance" will be needed even after the harvest.

The Global Mayors COVID-19 Recovery Task Force, representing cities on every continent, has announced a proposal for a post-pandemic "new normal" that will de-emphasize cars and carve out more room on the streets for bicyclists. The C40 Mayors Agenda for a Green and Just Recovery, issued July 15, seeks to create conditions that will proactively prepare cities for future pandemics, while addressing systemic injustices and keeping global warming below the 1.5°C goal of the Paris Agreement. The Agenda calls for substantial investments in affordable housing and public transportation, the permanent banning of cars from many thoroughfares, an end to public investment in and subsidies for fossil fuels, and an embrace of the "15-Minute City" paradigm now being pioneered by Paris.

The Ninth Circuit Court of Appeals on July 9 issued a ruling in favor of the US government, allowing oil drilling to proceed in the National Petroleum Reserve-Alaska (NPRA). The court rejected a claim by environmental groups that a 2012 impact statement prepared for earlier drilling within the NPRA was inadequate to cover new planned operations by oil companies elsewhere in the reserve, a critical caribou habitat.

The Supreme Court of Canada dismissed an appeal by the Squamish and Tsleil-Waututh First Nations in British Columbia, ending their years-long battle against the construction of the Trans-Mountain Pipeline. The pipeline is a controversial project to carry crude oil between Alberta and British Columbia's coast. The First Nations filed their appeal after a February decision by the Canadian Federal Court of Appeals that upheld the pipeline's legality. "The consultation process initiated by Canada invited the participation of 129 indigenous groups impacted by the project," stated that ruling, "and more than 120 either support or do not oppose it." The Squamish and Tsleil-Waututh contested this. In a 2018 appeal, the Tsleil-Waututh nation asserted sovereignty over the land, and their "freestanding stewardship, harvesting and cultural rights in this area." Both nations further claimed that the pipeline's construction would obstruct access to water, game and agricultural resources.