Headlines

Three photons at once beat the standard photon test

Physicists at the University of Twente have improved the standard test for the quality of individual particles of light. By letting three photons interfere at the same time instead of two, they draw more information from every measurement. Their experiment outperforms even a

Are zoos ready for the changing climate?

When people think about climate change and animals, they might picture melting sea ice, drought-stricken landscapes or species struggling in the wild. Far less attention is given to the animals living in our care. Yet as heat waves become more frequent, intense and

How to maximize the impact of federal transit funding

Billions of federal dollars are invested in public transportation each year, but those investments may yield greater ridership gains in smaller and midsize transit systems, particularly in the South and West, than in the nation's largest metropolitan areas, according to a new