Image: Foreground asteroid passing the Crab Nebula

When astronomers use the NASA/ESA Hubble Space Telescope to study the deep sky, asteroids from our solar system can leave their marks on the captured pictures of far-away galaxies or nebulae. But rather than be annoyed at ...

What is pepper spray?

Whether it's walking down a dark street at night or fighting off grizzly bears on the trail, pepper spray is an effective tool to fend off an attacker and get safely away. But have you ever thought about what gives this personal-defense-in-a-can ...

Image: Dance of the asteroids

As if this Hubble Space Telescope picture isn't cluttered enough with myriad galaxies, nearby asteroids photobomb the image, their trails sometimes mimicking background astronomical phenomena.

Designing greenways for diverse users

With greenways taking root in urban areas across the country, understanding who visits – and why – can help improve trail planning and design. A new study of greenways in Atlanta and San Antonio, Texas, offers insights ...

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