Earth

‘Tree Story’ explores what tree rings can tell us about the past

Once you look at trees through the eyes of a dendrochronologist, you...

Climate change made a southwestern U.S. drought one of the worst in 1,200 years

The drought in southwestern North America that lasted from 2000 to 2018...

Economic costs of rising seas will be steeper than we thought, unless we prepare

Rising seas that swamp cities and coastal infrastructure could cost the world...

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How Hurricane Maria’s heavy rains devastated Puerto Rico’s forests

Wind may be the usual suspect for knocking down trees during hurricanes, but a new survey of forest damage in Puerto Rico...

Fossil fuel use may emit 40 percent more methane than we thought

Using fossil fuels releases much more of the potent greenhouse gas methane than previously thought — possibly 25 to 40 percent more,...

More evidence hints that hydroxychloroquine doesn’t help treat COVID-19

The malaria drug hydroxychloroquine has been touted by some, including President Trump, as nearly a miracle cure for COVID-19. But new preliminary...

Dolphins can learn from peers how to use shells as tools

For some bottlenose dolphins, finding a meal may be about who you know. Dolphins often learn how to hunt...

Quasar winds with record energy levels were seen fleeing a distant galaxy

Black holes in the distant universe blow winds with 100 times the energy of all the stars in the Milky Way combined....

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The physics of solar flares could help scientists predict imminent outbursts

Space weather forecasting is a guessing game. Predictions of outbursts from the sun are typically based on the amount of activity observed...

Is the coronavirus mutating? Yes. But here’s why you don’t need to panic

In novels and movies, infectious pathogens mutate and inevitably become more dangerous. In the blockbuster movie Contagion, for instance, a deadly virus...

An ancient magma ocean may have once driven Earth’s magnetic field

Billions of years ago, Earth’s magnetic field may have gotten a jump-start from a turbulent magma ocean swirling around the planet’s core.

Red giant stars that eat planets might shine less brightly

When giant stars eat giant planets, their starlight may shine a bit less brightly. That dimming could affect how astronomers measure distances...

A new 3-D map illuminates the ‘little brain’ within the heart

The heart has its own “brain.” Now, scientists have drawn a detailed map of this little brain, called the intracardiac nervous system,...