Coughing Up Clues
This new research on the inadequacies of the whooping cough vaccine was published in PNAS. The referenced 2012 study on the vaccine’s waning immunity can be found in The New England Journal of Medicine.

Geologic Miracle on Ice
Background and schedules for the sport of curling in the 2014 Winter Olympics in Sochi, Russia, can be found here.

What Is It?
This story about gracefully aging freshwater polyps is based on a study in Nature. (Scientific American is part of Nature Publishing Group.)

The Traffic Effect
You can read the full version of this article about how traffic jams affect urban expansion. The story was based on new research in Physical Review Letters.

Tusk to Dust
An extended version of this article about why the U.S. destroyed six tons of illegal elephant ivory can be found on our Web site.

Atomic Revelation
Researchers have found an exception to the accepted rules of molecular bonding in a Nature Chemistry study. This article appears in its full length online.

Mushroom Magic
Want to hear more about how mushrooms generate their own breeze? Listen to our podcast.

Instant Weirdness—Just Add Water
The study on the strange physical friction between cornstarch and water cited in this story was published in Physical Review Letters.

The DNA Sketch Artist
The height study referred to in this Q&A comes from Human Genetics.

Living Claw to Mouth
This new research about how the early bird waits to catch the worm was published in Biology Letters.

Solar on Demand
Read the full version of this article about how solar could provide some African villages with more affordable energy.

80 Proof, Zero Gluten
Find an extended version of this article about labeling hard liquor “gluten-free” online. The FDA has also produced labeling guidelines, which are available online (pdf). The 2012 interim ruling by the Alcohol and Tobacco Tax and Trade Bureau can be found here (pdf).

Mixology Micromachines
The full story about technology inspired by nature and designed for your kitchen is available on our Web site, and is based on a study from Bioinspiration and Biomimetics.

By the Numbers
These facts on Internet dating come from a Pew report.