The Earth is made up of plenty of elements but Chromium is uncommon. This has scientists puzzled.
Why are the planets where they are instead of somewhere else?
The future does not look so bright. What can be done to help stop global climate change?
In 1987, an asteroid came within six orbital hours of hitting earth. What happens if the timing is right?
A new discovery suggests that living organisms may exist in places that scientists never before dreamed possible.
Why do meteors come when they do? What does the motion of the planet have to do with meteor speed?
Yes, it's true, Earth has "love handles!" Learn more about Earth's bulge...
Want proof the earth rotates on its axis every 24 hours?
Why did rainforests evolve so much more diversity than other parts of the globe?
Scientists are learning how to look at the inside of earth using earthquakes.