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image: TB over Time

TB over Time

By | August 1, 2015

Eighteenth-century DNA sequences yield insights into the history of tuberculosis infections.


image: High-Flying Ducks

High-Flying Ducks

By | July 1, 2015

Five species of waterfowl have evolved a variety of adaptations to adjust to the high altitude of South America’s Lake Titicaca.

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image: A Plague on Pachyderms

A Plague on Pachyderms

By | June 1, 2015

At least seven species of herpesvirus commonly infect elephants. At zoos, keepers scramble to save calves, who are particularly vulnerable to the viruses.


image: HIV in the Internet Age

HIV in the Internet Age

By | May 1, 2015

Social networking sites may facilitate the spread of sexually transmitted disease, but these sites also serve as effective education and prevention tools.


image: Llamas as Lab Rats

Llamas as Lab Rats

By | May 1, 2015

From diagnostics to vaccines, llama antibodies point to new directions in HIV research.


image: Miraculous Activist

Miraculous Activist

By | May 1, 2015

Timothy Ray Brown, commonly referred to as the “Berlin patient,” does not want to be the only person cured of AIDS.


image: A Deathly Pallor

A Deathly Pallor

By | March 1, 2015

Global warming could lead to lighter-colored insects with waning immune defenses.


image: Falling Out of the Family Tree

Falling Out of the Family Tree

By | March 1, 2015

A mutation in an ethanol-metabolizing enzyme arose around the time that arboreal primates shifted to a more terrestrial lifestyle, perhaps as an adaptation to eating fermented fruit.

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image: Centennial <em>Shigella</em>

Centennial Shigella

By | February 1, 2015

A strain of the dysentery-causing bacterium isolated in 1915 tells the story of a young soldier who died of the disease in the early days of World War I.


image: Seal Stowaways

Seal Stowaways

By | November 1, 2014

Pathogen traces recovered from Peruvian mummies suggest tuberculosis-causing bacteria rode from Africa to South America in pinnipeds.


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