Tickling Feather

Why can’t I tickle myself?

Science says you can't tickle yourself because your brain knows you are the one doing the tickling, taking away the surprise factor. This negates...
FM Radio Dial

Why do FM radio stations end in odd numbers?

FM radio stations end in odd numbers to prevent interference. The reason they are odd numbers rather than even numbers is that 1 (odd...
Furnace Creek in Death Valley

Where is the hottest place on Earth?

There are different types of temperature measurements so it depends on which type of measurement we are talking about when answering this question. I...
Red Blood Cells

How much blood do humans have?

The average adult has about 1.2 to 1.5 gallons (4.5 to 5.7 liters) of blood circulating inside their body. To put this into perspective,...

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...

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