Vol. 33, No. 4 DECEMBER 2015/JANUARY 2016
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Find your complete
Teacher’s Guide, videos,and
Spanish translations at:
www.acs.org/chemmatters On the cover: Illustration by Enrique Moreiro. Adapted from a photo at: http://www.osuit.edu/
news_stories/721, showing high school students touring the Oklahoma State University’s Institute
of Technology, which trains technicians to work in power-generation equipment facilities.
Open for Discussion:
Be Harmful to
As a Matter of Fact:
Types of Scientific
COVER S TORY:
Hot Stuff, p. 10
4 Open for Discussion: Can Triclosan Be Harmful to Human Health?
By Kristin Harper
Triclosan, a chemical compound added to a variety of consumer
products, has received a lot of bad press because it mimics
hormones in our bodies. What are the facts about triclosan’s
potential effects on human health?
19 As a Matter of Fact
A Rough Guide to Types of Scientific Evidence
5 Safety Data Sheets: Information that Could Save Your Life
By Brian Rohrig
Safety data sheets provide information on the composition, properties,
and hazards of certain chemicals. These sheets help teachers and
students handle chemicals safely, while conducting experiments in
a classroom laboratory.
8 A Moldy Situation: Chemistry to the Rescue
By Laura Poppick
How do you get rid of mold? Follow the story of Amy, whose house
was flooded after Hurricane Sandy hit in late October 2012 and
mold started growing in her basement.
10 Geothermal Power: Hot Stuff
By Chris Eboch
Most of the energy needed to light and heat our homes comes
from burning fossil fuels, a process that generates pollution and
contributes to climate change. But a clean and sustainable source
of energy is also available under our feet, and it is called geothermal
13 Bacteria Buster! Triclosan Kills Bacteria, but Is It Safe?
By Kristin Harper
Triclosan, a chemical compound used in toothpaste, soap, and
cosmetics to kill bacteria, has been linked, in animal studies, to
allergic reactions, accelerated onset of puberty, and possibly cancer.
How does triclosan work, and should we be worried?
16 Double, Double, Oil, and Trouble
By David Warm;ash
Foods rich in omega-3 fatty acids are known for their beneficial
effects on our health. What are omega-3 fatty acids, and how are
they used by our bodies to keep us healthy?