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Reusable water bottles are good for your wallet and the planet.

15 easy things you can do to help the Earth

Helping the environment doesn't have to take a lot of time and effort. Here are 15 little things you can do to help the Earth.
An artist's conception of the dust and gas surrounding a newly formed planetary system.

Earth is screaming through space at 1.3 million mph. A simple animation by a former NASA scientist shows what that looks like.

Earth orbits the sun, which orbits the center of the Milky Way galaxy, which is itself barreling through space.
This illustration by artist Pat Rawling shows the concept of a space elevator as viewed from the geostationary transfer station looking down the length of the elevator towards the Earth.

A giant elevator could connect Earth to space using current technology, experts say — here’s how that might work

A space elevator could make it easier, cheaper, and more sustainable to transport cargo and people from the surface of Earth or the moon to space.
This artist's concept shows NASA's InSight lander with its instruments deployed on the Martian surface. The seismometer is the round device to the left of the lander.

NASA’s InSight lander on Mars has detected more than 20 quakes. Early data suggests the red planet may be less Earth-like than we thought.

NASA's InSight lander has heard lots of rumbling on Mars. A seismologist says the quakes are changing our understanding of the planet's crust.
In this handout provided by the National Aeronautics and Space Administration, a satellite image shows the far side of the moon as it crosses between the DSCOVR spacecraft and the Earth, at one million miles away.

The moon has been drifting away from Earth for 4.5 billion years. A stunning animation shows how far it has gone.

The video shows how the moon reached its current position after starting as an orb of molten rock and magma hovering just above Earth.
A view of Earth taken by NASA's Earth Polychromatic Imaging Camera.

The first day of fall has arrived. Here’s how the equinox marks the changing of seasons.

The autumnal equinox happened at 3:50 a.m. ET on September 23, 2019. Here's how Earth and the sun work together to change our seasons.
This view of Honopū Valley, located in Kauaʻi, Hawaiʻi, is something you'll only see on an Apple TV — and now, your computer.

Apple used helicopters and drones to film stunning 4K screensavers for the Apple TV — here’s how to get them on your computer

Apple used drones, helicopters, and the International Space Station to film screensavers for the Apple TV, and there's a way to get them on your Mac.
Iguazu Falls.

27 waterfalls that are so beautiful they’ll take your breath away

From Skógafoss in Iceland to the Pearl Shoal Waterfall in China, here are 27 falls worth traveling for.
Iguazu Falls.

27 waterfalls that are so beautiful they’ll take your breath away

From Skógafoss in Iceland to the Pearl Shoal Waterfall in China, here are 27 falls worth traveling for.

An Apollo astronaut says the greatest moment of NASA’s program was not the moon landing — it was the ‘cosmic birth’ of humanit...

Apollo 9 astronaut Rusty Schweickart said the program's most profound moment occurred in 1968, when Apollo 8 astronauts saw Earth rise over the moon.