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1 Interview with Kate Golembiewski
2 ChemClub Infographic Contest Winner
Mixtures? The Types and How to Tell
4 Open for Discussion: How Reliable Is Forensic Evidence?
By Brian Rohrig
Any type of evidence collected by a forensic investigator, such as
;ngerprints, blood, and DNA, does not necessarily imply guilt.
Why is that?
19 As a Matter of Fact
Crime Scene Chemistry – Luminol
5 Guilty or Innocent? Fingerprints Tell the Story
By Brian Rohrig
Revealing the ;ngerprints left by a criminal is a tedious and time-consuming process that involves… you guessed it, chemistry!
8 Vertical Farming: Does It Stack Up?
By David Latchman
As the global population grows, more food will need to be produced
to meet everyone’s needs. One way to solve this problem is to
produce food underground.
10 How SUE Became a Rock Star
By Gail Mitchell Emilsson and Michael Tinnesand
SUE is the largest and most complete fossilized T. rex ever found.
A rock-like copy of her skeleton was preserved for millions of years
until it was discovered in August 1990.
13 Expiration Dates: What Do they Mean?
By Molly F. Wetterschneider
Expiration dates are stamped on the packaging of many kinds of
foods. What do those dates mean, and what would happen if you
ate food that was past its expiration date?
16 E-Cycling: Why Recycling Electronics Matters
By Roberta Baxter
When electronic devices end up in land;lls, the metals they contain
can leach into water or be released into the air, which could cause
harm to human health. The solution? Recycle these devices!
COVER S TORY:
How SUE became a
Rock Star, p. 10
Vol. 34, No. 3 October/November 2016
An electronic subscription to is now offered with your print subscription.
More information at: www.acs.org/chemmatters or by calling 1-800-333-9511.
On the cover: COURTES Y OF THE FIELD MUSEUM, CHICAGO, ILL.
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Guilty or Innocent?