January 22, 2019

Why do volcanoes blow their tops?

Earth’s crust rides on a sea of molten rock called magma, which bubbles to the surface wherever two plates meet. Earthquakes work like pressure valves for […]
January 22, 2019

Why are hurricanes so powerful?

Two reasons: strong winds and storm surge (the crashing of waves inland). So to understand the answer to this question, you first need to know what […]
January 22, 2019

Why is the earth getting hotter?

From frigid ice ages to globe-spanning heat waves, Earth’s climate has been subject to natural changes throughout its long history. But in the last century or […]
January 22, 2019

What causes lightning?

Ever notice how most batteries have little plus symbols (+) on their tops and minus symbols (-) on their bottoms? A storm cloud is like a […]