
What’s Cool About Ice?
By Hannah Schardt; art by Jack DesrocherFrozen water keeps our drinks cold and gives us a place to skate. But there’s so much more to ice!
➡️ Polar bears live most of their lives on sea ice.
➡️ On average, only 10% of an iceberg is visible above the sea’s surface. The other 90% is underwater.
➡️ The largest hailstone ever measured in the United States weighed nearly two pounds and was as big as a bowling ball.
➡️ Before modern air conditioning was invented, people cooled rooms by using fans to blow air over big blocks of ice.

➡️ Ninety percent of the world’s ice is in Antarctica.
➡️ During winter, a wood frog can survive even when most of the water in its body turns to ice.
➡️ Ice doesn’t form only on Earth. It’s on other planets, as well as on moons and comets. It’s even in Saturn’s rings!
➡️ The Antarctic ice sheet is the largest piece of ice in the world, covering more than 5 million square miles. In some places, it’s more than a mile thick.
➡️ The oldest ice on Earth is more than one million years old. Can you guess where it’s found?
(Yep—Antarctica!)
➡️ Salt water freezes at a lower temperature (28.4°F) than fresh water (32°F).

