The Poké Bar restaurant chain is offering an option of vegan tuna, made from bamboo, algae oil, potato, and radishes. Due to increased enforcement of fishing limits, four of the seven commercially fished tuna species are “on the path to recovery.”

New Zealand records its warmest winter ever.

Pope Francis, Orthodox Ecumenical Patriarch Bartholomew, and Anglican archbishop of Canterbury Justin Welby issue a joint declaration to the world’s Christians calling for action on climate: “This is a critical moment. Our children’s future and the future of our common home depend on it.” 

It is still possible to limit warming to 1.5°C, a study in the journal Nature says, but only if 60 percent of the world’s oil and gas and 90 percent of its oil remains in the ground and unused between now and 2050. 

A Louisiana judge forces the Biden administration to open all of the Gulf of Mexico for oil and gas leasing in a sale that could result in 1 billion barrels of oil.

The Biden administration announces a plan for the United States to get half its energy from solar power by mid-century. It also strikes a deal with the airline industry to cut its carbon emissions by 20 percent by 2030. 

Without fanfare, Harvard University divests its enormous (around $50 billion) endowment from fossil fuels. 

Thus far, California's 2021 wildfires have generated 91 million metric tons of carbon dioxide, 25 percent more than the state's annual fossil fuel emissions.

Since 1980, starling numbers in the UK have declined by 70 percent.

A new Harvard study says the benefits of cutting mercury emissions from coal-fired power plants are 100 times greater than estimated by the EPA. 

The White House asks for the resignation of four Trump-appointed members of the US Arctic Research Commission, saying they “lack expertise in the relevant areas.” 

The EPA resumes efforts, abandoned during the Trump administration, to protect the salmon-rich waters of Alaska’s Bristol Bay from possible contamination by the proposed Pebble copper and gold mine.

The International Union for Conservation of Nature votes by more than 80 percent in favor of a worldwide moratorium on deep-sea mining.

Having been granted legal personhood by the White Earth Band of Ojibwe, manoomin—wild rice—sues to block Enbridge Energy’s Line 3 Pipeline.