John Timmer - Page 1

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Corals convert sunscreen chemical into a toxin that kills them

EnlargeJustin Lewis Medical authorities have spent years convincing people to use sunscreen to limit their exposure to UV light. But that effort...

Webb’s mirror alignment is done—now it’s on to the instruments

Enlarge / A very detailed view of one of the Milky Way's satellite galaxies.NASA/STScI In mid-March, NASA released an image from the...

Biden to use infrastructure money to keep nuclear plants open

Enlarge / An aerial view of the Prairie Island Nuclear Power Plant, near Red Wing, Minnesota.Getty Images Nuclear plants occupy an odd...

We’ve been watching a failed star turn into a giant planet

Enlarge / Image of the AB Aurigae system, with details of the object shown at the right.NASA, ESA, Thayne Currie On some...

A controlled experiment focuses on improved policing method

EnlargeGetty Images Over the last few decades, there's been a heavy emphasis on techniques that fall under the concept of "proactive policing."...

A new picture of the hot water beneath Yellowstone’s geysers

Enlarge / Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park.Ignacio Palacios / Getty Images The vast volcanic caldera at Yellowstone National...

Extensive study finds small drop in brain volume after COVID-19

EnlargeGetty Images Infection by SARS-CoV-2 causes a dizzying array of symptoms beyond the respiratory distress that is its most notable feature. These...

Webb Telescope reaches major milestone: All its light is in one place

EnlargeNASA/STSci Today, NASA shared an image indicating that it had successfully completed the image alignment stage of commissioning the James Webb Space...

New fast radio burst found in area that shouldn’t have any sources

Enlarge / Artist's conception of a high-energy burst coming off the surface of a magnetar.Goddard Space Flight Center Fast radio bursts were...

New data on using J&J vaccine to boost itself

EnlargeRAJESH JANTILAL / GETTY IMAGES Based on various measures, the Johnson & Johnson COVID-19 vaccine has appeared to be less effective than...

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