A Moment of Science

Archive for August 2009

August 3, 2009

 

Toddler shedding a tear.

Why We Cry: The Chemistry Of Tears

It turns out, tears are more essential than might have thought. This Moment of Science looks at the chemistry of tears.

August 4, 2009

 

Girl Listening With Headphones

Hearing Loss, Slowly But Surely: How To Avoid Going Deaf

Your hearing may be fine now, but years down the road you'll be regretting ever listening to loud music.

August 5, 2009

 

Small boat on beach

The Truth Behind Déjà vu

Today's Moment of Science asks the question: "Have you really been there before"?

August 6, 2009

 

Man holding a sleeping baby

Do Babies Gain Weight While Sleeping?

A baby's weight doesn't really change when they fall asleep, so why does the limp, floppy weight of a sleeping baby seem greater than it actually is?

August 7, 2009

 

Two caves on Mediterranean coast

Losing Your Voice To An Echo

Shout "HELLO" between two cliffs and you'll hear echoes as sound waves bounce back and forth. But how do echoes really work? Find out on this Moment of Science.

August 10, 2009

 

Four surgeons performing on patient

How Does Your Surgeon Prepare For The Big Operation?

Surgeons have pretty tedious jobs. One mistake could result in the death of a patient. How do these professionals prepare for such stressful situations?

August 11, 2009

 

Close up of French fries

Healthy Menus Cause Unhealthy Decisions?

Having trouble saying "no" to the cheeseburger, and "yes" to the salad? Learn about vicarious goal fulfillment on this Moment of Science.

August 12, 2009

 

Common milkweed with several insects

Want To Turn A Profit? Invest In Milkweed Crops

You may think milkweed is just a stubborn weed, but to some it's a valuable commodity.

August 13, 2009

 

Bowl of Cheerios and milk

Are You Getting The Nutrients You Need From A Bottle Of Gatorade?

What would you rather have after playing tennis or jogging for forty minutes: a sports drink or a bowl of cereal with milk?

August 14, 2009

 

Bush-cricket on leaf

How To Calculate The Temperature With The Chirp Of A Cricket

Ever been camping and wondered what the temperature was? Here's a way to find out! All you need is wrist watch, your ears, and a little patience.

August 17, 2009

 

Dancing parrot at festival

Dancing Birds Get Funky With Rhythm

Want to improve your groove when it comes to the Funky Chicken or the Electric Slide? Maybe you could take a lesson from the birds.

August 18, 2009

 

Coal Power Plant

Energy Alternatives: Solar Power, Biofuels, and… Coal?

Could coal, a carbon-rich fuel, be the key to fixing America's rising gas prices?

August 19, 2009

 

Damage from 2008 Sichuan earthquake

How To Keep Buildings From Falling During Earthquakes

During earthquakes, why is it that some buildings tumble to the ground, while others stand tall?

August 20, 2009

 

Road filled with potholes

Self-healing Concrete?

Have you ever been driving down a pothole filled street, thinking, "I wish the city, someone, anyone would fix the roads!"

August 21, 2009

 

A man's veiny arm

When Your Arm Falls Off

Why do arms sometimes fall asleep and why do they start to tingle?

August 24, 2009

 

A river dolphin out of water

Rare And Unusual River Dolphins

Contrary to popular belief, some dolphins find habitat in river waters.

August 25, 2009

 

Dead sea bird in oil contaminated water

Oil Spills , Naturally

It's a big deal when an oil tanker spills its contents into the ocean. And for good reason. But what about oil spills that aren't caused by humans?

August 26, 2009

 

Dollar bills and coins laid out on a table.

Money Changers

Ever wonder how a money changer machine knows if you've given it a one, a five or a ten dollar bill?

August 27, 2009

 

Corn field under blue sky

Good News! Corn May Be A New Energy Source

If the government approves the Glossy 15 gene, we may be in for a drop in gas prices.

August 28, 2009

 

Close up of yawning lion

Creatures That Yawn When Stimulated

Humans yawn when sleepy to stay alert. But imagine yawning when you're already stimulated.

August 31, 2009

 

Woman stretching her arms

Body Movements And Problem Solving

Next time you have a "brain-fart", try jogging in place.

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