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An artist's concept of Earth's magnetic field.

A chunk of the Earth’s magnetic field is weakening, which could wreak havoc on some satellites

The magnetic field has weakened 9% over the last 200 years. A weak spot in the southern Atlantic, which has grown bigger every year, has split in two.
This composite image of southern Africa and the surrounding oceans was captured by six orbits of the NASA/NOAA Suomi National Polar-orbiting Partnership spacecraft on April 9, 2015.

A simple animation by two scientists reveals what Earth’s surface is made of — and how we only see 0.5% of the planet

Earth's surface, where all known life exists, makes up only 0.49% of its mass. Just below, the mantle glows green.
Yosemite Falls seen without people due to the park closure on April 11, 2020.

Photos and charts show how the natural world is thriving now that humans are staying indoors

From cleaner beaches to less air pollution, here are 15 examples of how the world's condition is improving while people stay indoors.
A composite image of Earth from above the North Pole, May 26, 2012.

A simple animation by a planetary scientist reveals what would happen without leap years: December would eventually drift into summer

The animation shows how leap years solve a crucial problem with our calendar: a year isn't actually 365 days.

NASA slowly drains the oceans in an incredible animation, revealing hidden underwater mountain ranges and ancient land bridges

The video offers a glimpse at the world ancient humans lived in by exposing the ice-age bridges they crossed between continents.
Auroral dunes near Ruovesi, Finland, October 7, 2018.

Aurora chasers discovered and filmed a new type of aurora that reaches across the sky like fingers. It’s called ‘the dunes.’

Scientists think the new aurora forms when electric currents from space create folds and curls in Earth's atmosphere.
The aurora borealis, or the "northern lights," over Canada is seen from the International Space Station on September 15, 2017.

A mysterious crunch in Earth’s magnetic field created a new type of aurora borealis. A NASA intern discovered it.

A NASA intern saw the aurora in 3-year-old footage of the Arctic sky. It's the first known aurora caused by Earth's magnetic activity.
The Danakil Depression is located in northeastern Ethiopia.

From a toxic Ethiopian desert to a fiery Hawaiian volcano: These are the 10 most extreme places on Earth

From Ethiopia's Danakil Depression to Antarctica's Vostock station, some places on earth are almost inhospitable.
A view of Earth taken at 1:07 p.m. EDT on January 15, 2017 by the GOES-16 satellite.

A handful of recent discoveries has transformed our understanding of Earth-like planets in the galaxy. Here’s why Earths might be common.

There could be up to 10 billion Earth-like planets in our galaxy alone. That's good news for astronomers seeking alien life.
A set of photos shows the difference between the ice on Switzerland's Rhone Glacier between September 2018 (top) and September 2009 (bottom).

The only #2009vs2019 photos we should care about — people are using the ’10-year challenge’ as a stark warning about what’s ha...

The only #2009vs2019 photos that really matter: how melting glaciers, rising seas, and warmer oceans have changed our planet in the past decade.