How can the oceans be saltwater when the rivers that flow into them are...
The freshwater found in rivers originates from rainwater and melting snow/ice. As this water flows downriver towards the ocean (or sea), it picks up...
Why is the sky blue?
This one is tough to explain in a few paragraphs, but here it goes. To understand why the sky is blue, we first need to...
Why is hydrogen peroxide sold in brown bottles?
Hydrogen Peroxide is sold in brown (or dark) bottles because it can decompose into water if it's exposed to light. Opaque bottles keep the...
How do fish survive when ponds and lakes freeze?
When a lake freezes, only the top layer actually freezes over. The area beneath the ice is where fish survive. This is due to something called...
Why are sloths so slow?
The first piece of the puzzle to understanding why sloths are so slow is their low-calorie folivorous (mostly leaves) diet. Many other folivorous animals...