DEET (short for N,N-diethyl-meta-toluamide) is the most widely used insect repellent in the world for a very good reason – it works really, really well! Just a quick spray on exposed skin keeps mosquitoes, flies, fleas, chiggers, and ticks away. Developed by scientists at the U.S. Department of Agriculture and patented by the U.S. Army […]

What’s better than a day at the beach? A day at the beach and not being miserable for the next several days because of sunburn! That’s were the modern miracle of sunscreen comes into play. Did you know many sunscreens are products of nanotechnology? An advisory statement from the Australian Government’s Therapeutic Goods Administration, Safety […]

Depression, Exercise, and Genetics
Chances are some your students or their family members are currently battling depression, and thus may be interested in this story. The link between regular exercise and mood enhancement has been known for some time now. Scientists have established that exercise increases levels of neurotransmitters such as dopamine and serotonin, which in […]

More than once in the past year and a half, newscasts from the sites of fatal coal mine accidents have riveted the nation’s attention. Recently, the New York Times reported on an investigator’s findings that a federal agency failed to conduct required safety inspections in many U.S. coal mines during this time.
We can assume that […]

With the popularity of science-fiction movies like Jurassic Park that simplify the effects of DNA and genes and ignore environmental factors, teachers may find it challenging to convey to students the important role of the environment on gene activities, and vice versa.
For example, individuals may possess a gene combination that could predispose them to certain […]

We’re ever thankful when our students come to school with freshly brushed teeth, but could there be a circumstance under which you would suggest your students not use toothpaste? In May of this year, BBC News reported that the Chinese government was investigating charges that toothpaste containing diethylene glycol, also known as antifreeze, had been […]

It’s a sure bet many of your students are lamenting their height, wondering when or if they’ll ever grow into their feet! Tall and lanky? Blame your genes was the lead story on ABC News in Science, Monday, September 03, 2007. This story illustrates several concepts associated with the methods of science and scientific enterprises, […]