An anonymous reader quotes a report from the Guardian: The Massachusetts Institute of Technology (MIT) community is grieving after the "shocking" shooting death of the director of its plasma science and fusion center, according to officials. Nuno FG Loureiro, 47, had been shot multiple times at his home in the affluent Boston suburb of Brookline on Monday night when police said they received a call to investigate. Emergency responders brought Loureiro to a hospital, and the award-winning scientist was pronounced dead there Tuesday morning, the Norfolk county district attorney's office said in a statement.

The Boston Globe reported speaking with a neighbor of Loureiro who heard gunshots, found the academic lying on his back in the foyer of their building and then called for help alongside the victim's wife. The statement from the Norfolk district attorney's office said an investigation into Loureiro's slaying remained ongoing later Tuesday. But the agency did not immediately release any details about a possible suspect or motive in the killing, which gained widespread attention across academic circles, the US and in Loureiro's native Portugal.

Portugal's minster of foreign affairs announced Loureiro's death in a public hearing Tuesday, as CNN reported. Separately, MIT president Sally Kornbluth issued a university-wide letter expressing "great sadness" over the death of Loureiro, whose survivors include his wife. "This shocking loss for our community comes in a period of disturbing violence in many other places," said Kornbluth's letter, released after a weekend marred by deadly mass shootings at Brown University in Rhode Island -- about 50 miles away from MIT -- as well as on Australia's Bondi Beach. The letter concluded by providing a list of mental health resources, saying: "It's entirely natural to feel the need for comfort and support."

Longtime Slashdot reader schwit1 shares a report from Politico: The Senate on Wednesday approved Jared Isaacman for the top job at NASA -- an unprecedented comeback after President Donald Trump yanked his nomination this spring. Senators confirmed the billionaire private astronaut in a 67-30 vote. Trump renominated Isaacman for NASA administrator in November, after pulling his original nomination in May. He cited Isaacman's relationship with SpaceX CEO Elon Musk, with whom Trump had just had a falling out, as the rationale for his decision. Isaacman's surprise rebound followed months of political jockeying and help from high-profile figures in Trump's orbit. [...] Isaacman garnered backing from lawmakers during his hearing by confirming his support for NASA's Artemis moon-landing mission, a key prerogative for Capitol Hill. He also committed to instilling urgency at the space agency, citing China's space ambitions.

A comprehensive database built by scientists in Switzerland and Norway has catalogued 16,000 chemicals linked to plastic materials, and the findings paint a troubling picture of what Americans are actually eating when they prepare food in their kitchens. Of those 16,000 chemicals, more than 5,400 are considered hazardous to human health by government and industry standards, while just 161 are classified as not hazardous. The remaining 10,700-plus chemicals simply don't have enough data to determine their safety.

The chemicals enter food through multiple pathways. Black plastic utensils and trays often contain brominated flame retardants because they're made from recycled electronic waste. Nonstick pans and compostable plates frequently contain PFAS. One California study found phthalates in three-quarters of tested foods, and a Consumer Reports analysis last year detected BPA or similar chemicals in 79% of foods tested. According to CDC data, more than 90% of Americans have measurable levels of these chemicals in their bodies. A 10-fold increase in maternal levels of brominated flame retardants is associated with a 3.7-point IQ drop in children.

A new Arctic Report Card recap shows how the Arctic has transformed in just 20 years, warming about twice as fast as the global average and losing most of its oldest sea ice. It's also triggering cascading impacts from "Atlantification" to permafrost-driven "rusting rivers" and more destructive storms. Scientific American reports: The first Arctic Report Card was released by the National Oceanic and Atmospheric Administration in 2006. Since then the region has warmed twice as fast as the global average. About 95 percent of the oldest, thickest sea ice is gone -- "the sliver that remains is collected in an area north of Greenland. Even the central Arctic Ocean is becoming warmer and saltier, causing more ice melt and changing how much heat is released into the atmosphere in a way that affects weather patterns around the world. Those are just some of the stark changes 20 years have wrought. The findings were highlighted in the 2025 Arctic Report Card, released on Tuesday.

The Arctic Ocean is undergoing what scientists are calling "Atlantification" -- a process where warm, salty water from the Atlantic flows north, changing how waters of different temperatures and densities are layered in the Arctic, disrupting ecosystems and altering how heat moves from the water to the air. [...] The Arctic is simply becoming wetter, with more precipitation falling as rain instead of snow. June snow cover over the entire Arctic is half of what it was 60 years ago, the report found. Permafrost also continues to thaw, releasing once trapped carbon into the atmosphere and disgorging iron and other elements that have turned rivers and streams orange. These "rusting rivers," found in more than 200 watersheds, are more acidic than normal and have elevated levels of toxic metals that endanger local ecosystems. And as the permafrost thaws, the tundra of the Arctic biome is shrinking, and the boreal forest biome is creeping northward, disrupting ecosystems.