You always notice changes in the weather but you might not be able to notice climate change. Over the past 200 years, our planet’s average temperature has risen about 1.8 degrees. Why is that such a big deal? Learn about the greenhouse effect and how human beings are causing the earth to warm at a rate faster than historically measured.
Category: Physical Science
Twice a year in Hawaii, there are no shadows
Whoa. Twice a year, at ”solar noon” — a time when the sun is highest in the sky (not actually noon on a clock) — there are no shadows. This is because of Hawai’i’s position on the globe. It doesn’t happen in any other state in the U.S. but it does occur in 80% of Africa. Learn why.
What does the atmosphere do?
Earth’s atmosphere is a barrier between outer space and the biosphere where all life exists.
Humans definitely went to the moon
If you needed simple explanations of the proof that humans visited the moon, here are 5.
Climate change crash course
You might already know that climate and weather are different things. This video goes deeper and explains how climate can affect an ecosystem.
Is the Apollo 11 Lunar module still orbiting the moon?
Do you ever think about the spacecraft and satellites we’ve left up in space? What happens to them?
Why is the sky blue?
It’s a question we’ve all asked at one point. But how many people do you know who can tell you why the sky is blue? Like a lot of science: it’s easy to understand but hard to explain.