The brilliant iridescent hues found in ammolite come from tiny air gaps in the fossils’ layers, a new study finds.
Two reporters wanted to witness firsthand how doctors and families navigate mixed messages and unproven claims.
Diagnosed with A.L.S., they traded stories, drank tequila and made grim jokes at a unique annual gathering on Cape Cod.
At this year’s climate summit, the United States is out and Europe is struggling. But emerging countries are embracing renewable energy thanks to a glut of cheap equipment.