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Page 19

Zap! Peeling off tape can spark chemical reactions in the air

Rip off a piece of tape in a dark room and you may see a flash of light. This happens because the peeling tape releases energy that creates tiny sparks.…

Here’s a spider whose barf is worse than its bite

First, swaddle a fruit fly or other tasty prey in silk. Then barf toxins all over it. That’s how one type of spider prepares to dine. Giulia Zancolli recalls the…

Get a sneak peek at the tech you may use in the future

You wake up and yawn, then put on a special pair of glasses. As you’re getting ready for the day, a friend calls. The glasses project an image of your…

Sleeping in — but not too much — may ease anxiety

For many teens, Saturday mornings are a time to snooze. After a week of getting up early, the weekend brings a chance to catch up on much-needed slumber. And sleeping…

Uncover leaves’ hidden colors in this science activity

Objective: Separate the different pigments in tree leaves Areas of science: Chemistry, Plants Time required: 1–2 days Key concepts: plant pigments, paper chromatography, leaves Credits: Teisha Rowland, PhD, Science Buddies;…

Watch out: Hail can get really big!

Chunks of ice fall from the sky, bounce off hard surfaces — and sometimes even break windshields and hurt crops. Maybe you’ve seen these pieces of ice laying on the…

New study links chemical in plastics to fatal heart disease

A common ingredient of many plastics has just been linked to a high risk of death from diseases of the heart and blood vessels. The chemical is known as DEHP.…

How do lizards find food to eat?

Abstract What is your hide-and-seek strategy? Maybe you search one area at a time, look for signs of movement, or even listen to see if you can hear your friends.…

A real-life vampire probably couldn’t survive on blood alone

Vampires have been stalking the human imagination for centuries. These fictional creatures take many forms, including the famous Count Dracula and Morbius of the Marvel Universe. But most share one…

A century later, impacts of the Scopes ‘Monkey Trial’ still echo

One hundred years ago, a small town in eastern Tennessee captured the attention of the entire country. A biology teacher in Dayton was accused of teaching human evolution to his…