What Causes Body Odor?

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Jul 132018
 

This TED-Ed lesson is one that every middle school health teacher will want to bookmark. The lesson explains where body odor comes from, the processes that and contribute to body odor, and how antiperspirants work.

Most of us don’t need more than one whiff to identify that generally unpleasant, characteristic smell we call body odor. But it’s a surprisingly complex phenomenon, influenced by our genetic makeup, age, diet, and hygiene. So what is this odor, exactly? Where does it come from? And can we do anything about it? Mel Rosenberg dives into the stinky science of body odor.

Lesson by Mel Rosenberg, animation by Els Decaluwe.

 

 

What Causes Headaches?

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Jul 092018
 

In ancient Greece, the best-known remedy for a long-standing headache was to drill a small hole in the skull to drain supposedly infected blood. Fortunately, doctors today don’t resort to power tools to cure headaches, but we still have a lot to learn about this ancient ailment. In this Ted Ed lesson Dan Kwartler shares what we know (and don’t know) about headaches.

Today, we’ve classified headaches into two camps— primary headaches and secondary headaches. …we actually know much more about secondary headaches. These are caused by other health problems, with triggers ranging from dehydration and caffeine withdrawal…the origins of primary headaches remain unknown. Scientists are still investigating potential triggers for the three types of primary headaches: recurring, long-lasting migraines; intensely painful, rapid-fire cluster headaches; and, most common of all, the tension headache.

 

 

How To Of The Day: How To Survive A Nuclear Attack

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Jul 012018
 

If you want to be prepared for a nuclear attack, here’s a science-based guide to help you get there.

 

 

How To Of The Day: How To Break Your Bad Habit

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Jun 302018
 

A look at why bad habits are so hard to break and a few ways that will help you break them.

 

 

What Do Food Expiration Dates Actually Mean?

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Jun 252018
 
SciShow:

Sell By, Best By, and Use By… do these dates actually tell you anything? Food science can be tricky, but we’re here to clear some of it up.