The US Supreme Court curtails the ability of the EPA to regulate greenhouse gas emissions from power plants. 

Ketanji Brown Jackson is sworn in as a justice on the Supreme Court, the first Black woman to hold that position. 

President Joe Biden endorses amending Senate filibuster rules in order to protect women’s right to abortion. 

The Biden administration restores the more expansive definition of “critical habitat” for endangered species in place of the constricted version that had been put in place under Donald Trump.

Scott Pruitt, EPA administrator under Donald Trump, places fifth in Oklahoma’s Republican primary for US Senate. 

The Michigan Supreme Court throws out charges against former governor Rick Snyder and others in the 2014 Flint water crisis. Days later, in another trial relating to the lead contamination of the majority Black city’s water supply, Snyder asserts his Fifth Amendment rights against self-incrimination rather than testify.

Residents of Mississippi’s capital city, Jackson, are told to boil their water because of the city’s failing water-treatment infrastructure.

A huge “coronal mass ejection” of magnetic flux and plasma erupted from the surface of the sun on June 26, but it isn’t known whether it will cause a solar storm on Earth because the facility where NASA’s solar data is stored, at California’s Stanford University, was without power at the time because of a nearby wildfire. 

In the past 20 years, 36 countries have gained more trees than they’ve lost. 

Colombia’s first leftist president, Gustavo Petro, promises to halt deforestation in the Amazon by limiting agribusiness expansion and protecting Indigenous reserves.

The Biden administration resumes leasing public lands for oil and gas drilling in eight states. 

In California, train track temperatures in excess of 140°F lead to the derailment of a Bay Area Rapid Transit train. In Texas, the heat causes a road to melt.

Russia uses the pretext of its war on Ukraine to weaken environmental protections. 

The Petal Gas Storage Station in Mississippi leaks half a ton of methane into the atmosphere every hour, the greenhouse equivalent of 87,000 cars.  

A project in South Sudan to divert the White Nile to Egypt could turn Africa’s biggest, wildlife-rich wetland into desert. 

Megan Wachspress, staff attorney for the Sierra Club’s Beyond Coal campaign, wins six consecutive games on Jeopardy.