All of the blood in your body travels through your heart once a minute.

Likes

More Like Science

They’re out of this world, gang!

Dr Karl explores how birds flock

Find out about Charles Darwin and his theory of evolution.

How much do you know about this fab fruit?

Type whatever you want to search

You’re leaving natgeokids.com
to visit another website!

Ask a parent or guardian to check it out first and remember to stay safe online.

You're leaving our kids' pages to visit a page for grown-ups!

Be sure to check if your parent or guardian is okay with this first.