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Page 29

Physics explains how rose petals get their iconic shape

Would a rose by any other shape smell as sweet? Maybe. Yet the shape of a rose is part of its beauty — and why these flowers fascinate scientists. As…

Scientists Say: Quantitative and Qualitative

Quantitative and Qualitative (adjectives, “KWAN-ti-tay-tiv” and “KWAL-eh-tay-tiv”) The words “quantitative” and “qualitative” describe two kinds of data. These terms also describe research using each kind of data. Quantitative research relies…

Forget droplets. Here’s how sweat really forms

On a summer day, a telltale drop of sweat tickles down your back. Next thing you know, sweat is running off you in rivers and your shirt is soaked. A…

Quashing the spotted lanternfly may require help from other species

A beautiful menace is on the move in the United States. Polka-dotted, red-and-gray-winged insects are gliding along sidewalks, climbing over plants and crawling up buildings. Spotted youngsters are leaping away…

What dogs see on TV depends on their temperament

Maybe your Pomeranian is a little too into the chicken jockey scene in A Minecraft Movie. Or your pit bull may seem excited for the next season of Wednesday. Really,…

Let’s learn about rivers

What has a bed but doesn’t sleep, a mouth but doesn’t speak, and a bank but no money? A river! Rivers are big, natural flows of water that snake across…

This may be the oldest, most complete Neandertal fingerprint ever seen

At an ancient rock shelter in central Spain, archaeologists have unearthed a stone marked by a unique red dot. That spot — made using red ochre, a natural pigment —…

Scientists Say: Biodiversity

Biodiversity (noun, “By-oh-div-ER-sit-ee”) Biodiversity describes the variety of species in a region. This includes all forms of plant, animal, fungi and microbial life. Biologists estimate biodiversity a few different ways.…

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…