Organic Pollution

Forest meadows, fresh flowers… tail pipe exhaust? This is Sandra Tsing Loh with the Loh Down on Science. Secondary organic aerosols–gah! These tiny particles are a class of chemicals that form the air around us. As natural and industrial gas emissions interact with sunlight, the resulting particles reflect or absorb

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Shellfish Sherlock

Shellfish are tasty. But can they illuminate the past? This is Sandra Tsing Loh with the Loh Down on Science. Professor Pupa Gilbert at the University of Wisconsin-Madison studies pen shells. That’s a large, clam-like shellfish commonly found in Florida. Specifically, she studies their nacre, or mother-of-pearl. It’s that iridescent

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Underage Volcano

Don’t erupt — but is that a fake I.D.?! This is Sandra Tsing Loh with the Loh Down on Science. Taupo is an active volcano in New Zealand. But scientists can’t pin down its age! The usual method is to carbon date nearby trees that perished during the eruption. All

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Bite Me

To live or to die…? Depends on your. . . teeth? This is Sandra Tsing Loh with the Loh Down on Science. One hundred and eighty million years ago, gigantic marine reptiles ruled the seas. Then, water levels began rising… dramatically! Not all seafaring reptiles could adapt. So, who survived

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Go Fish

The catch of the day is… extinct? This is Sandra Tsing Loh with the Loh Down on Science. In the last eighty years, wild seafood stocks have decreased by up to thirty-five percent. Rising sea temperatures aren’t helping! Fish are cold-blooded animals, which means they adapt to the temperature of

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Put a Gribble in Your Tank!

Gas prices have you feeling CRABBY? This is Sandra Tsing Loh with the Loh Down on Science. Fossil fuels aren’t going to be around forever. Fortunately, scientists are finding new ways to develop similar fuels from wood! But turning wood into fuel might need the help of a little friend.

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Poopy Climate Change

Family road trip! What’s that smell? Is it Dad, Mom, or–? This is Sandra Tsing Loh with the Loh Down on Science saying: Pee-yew! It’s cows, and their poop! Cows smell bad but their poop smells worse. Then again, could a climate change secret be hiding in those cow pies..?

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Pink Snow

We all know to avoid yellow snow. But what about PINK snow? This is Sandra Tsing Loh with The Loh Down On Science. Pink snow forms when the surfaces of glaciers and ice sheets melt. Red algae grow in the meltwater and color the snow beneath. Scientists from the University

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Mighty Methane Munchers

It’s jolly! Its green! But its …not a giant? This is Sandra Tsing Loh with the Loh Down on Science. The ocean is teeming with diverse life, especially at hot vents on the ocean floor! For example, Archaea — single celled organisms, not to be confused with bacteria. Tiny, one-celled

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Mystery Volcano

Can a volcano cause global… cooling? This is Sandra Tsing Loh with the Loh Down on Science, going back in time to… The early 1800s. When it’s cold! Throughout Europe and North America, there’s frost, and famine. That cold spell was blamed on the eruption of Indonesia’s Tambora volcano, in

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