# ‘Science and Nature’

December 19, 2014 4:00 pm

When you watch squirrels or chipmunks run around your neighborhood, do you ever wonder exactly where they go? How about sharks? They can swim hundreds of miles a day, so it could be hard to follow them. But scientists have been following one shark, named Lydia, using a satellite tracker they put on her. Read on to do the math on the miles Lydia has swum!

December 10, 2014 4:00 pm

Satellites are pieces of equipment that fly high up in space around Earth. They send us our phone calls and pictures that show up on the computer; they show us where we are on the map (GPS); and they can study the stars and other stuff out in space. You’d be surprised just how many are flying miles above our heads, and how different they are from each other.

##### The Shape of Paddle Splash

December 8, 2014 4:00 pm

Have you ever rowed a boat using oars? The more you paddle the same way over and over, and the more closely you match the timing of other rowers on your boat, the faster the boat goes. A photographer showed this in beautiful pictures using LED lights. Read more to do the math on this great example of math in action!

##### Your Miles and Miles of Hair

December 1, 2014 4:00 pm

Every day, every hair on your head grows. It grows just a little bit, about ½ inch in a whole month, but that’s more than zero. And remember, you have around 100,000 hairs on your head, so the feet of hair can quickly get out of hand!

##### Leaf Explosion

November 24, 2014 4:00 pm

When you fling yourself into a pile of leaves, do you ever wonder how many leaves are in there? You might be surprised at how quickly the number of leaves pile up.

##### Party Time in Space

November 20, 2014 4:00 pm

Riding a rocket must be incredibly exciting. But it must be even better to zoom on a rocket up to the International Space Station and stay there. Sailing 268 feet above our heads, the ISS celebrates its 15th birthday today. So if you look up in the sky tonight and see it floating by, make sure to give it a “Happy birthday” shout out!

##### A Mailbox for Fish

November 15, 2014 4:00 pm

It’s pretty amazing that you can write a letter to a friend, write an address hundreds of miles away on the envelope, and within days your friend gets your letter in the mailbox. And when the mailbox is underwater, like one in the town of Susami, Japan is, getting the mail may turn in to going for a swim.

##### How to Ride a Comet

November 14, 2014 4:00 pm

Comets are one of the most exciting types of space objects: a chunk of rock and ice speeding through space and leaving a long, bright tail of ice and dust behind it. What’s even more exciting is landing a spacecraft on a comet traveling 135,000 miles per hour, which happened this week!

##### Too Big for the Camera

November 8, 2014 4:00 pm

How do you take a picture of a tree that you can’t fit into the camera’s view? Read on to find out how a team of tree climbers and photographers from National Geographic did it to take a picture of a 247-foot tree called The President.

##### Cloudtrackers

October 30, 2014 3:00 pm

When you look up at the sky, for a moment a big fluffy cloud might block the sun, and then you’re in the shade. These puffy, floating shadow-makers are great for creating shapes…and doing math.