Quantum dots are crystals of a fluorescent semiconductor material with a diameter of as few as 10 to 100 atoms (2-10 nm). They are used as labels for imaging molecules because of their very narrow ...

April 9, 2025 • Amy Sherald, who painted former First Lady Michelle Obama's portrait in 2018, has a major survey of her work opening this week at the Whitney Museum of American Art in New York.

Nyoongar country spans from Leeman in the northwest to beyond Cape Arid in the southeast, in the southwest of Australia. The Nyoongar calendar includes six seasons.