The next time you long for the romance of the northern lights, switch on a fluorescent lamp! There may be less mystique, but the principle will be the same.
You've probably heard that global warming in the Arctic is killing off polar bears by shrinking their habitat, but are other arctic animals suffering, too?
If you ever visit the Arctic, you might see some really cool, luminescent clouds high up in the atmosphere. Scientists call them night shining clouds.
The greenhouse effect is not the only man made mechanism responsible for things heating up. Scientists have found that snow is also responsible.
As part of the mating process, female giant water bugs latch onto male water bugs and cement as many as one hundred and fifty eggs to his back, then leaves.
What is the biggest living animal? An elephant? Not even close. Learn more on this Moment of Science.
Native Americans called it Pogonip, or white death. Find out more about this strange type of fog.
Surprisingly, snow makes good insulation. In physics, an insulator is a material that does not conduct heat very well, like an oven mitt.
Eating snow to obtain water is metabolically expensive–it would take too much energy to melt down enough snow. Consequently, polar bears have evolved so that they don’t need to drink free water.