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Quantum Physics

A maverick physicist is building a case for scrapping quantum gravity

To merge quantum physics and general relativity, physicists aim to quantize gravity. But what if gravity isn’t quantum at all?

Astronomy

50 years ago, astronomers challenged claims that Barnard’s star has a planet

Astronomers have been searching for planets around the sun’s close neighbor for decades.

Climate

Here’s how 2023 became the hottest year on record

The effects of climate change were on clear display in 2023 as records not only broke, but did so by surprising amounts.

Environment

Landscape Explorer shows how much the American West has changed

The online tool stitches together historical images into a map that’s helping land managers make decisions about preservation and restoration.