Carrie Arnold

Contributing Writer

Biology

The Mutant Genes Behind the Black Death

October 6, 2015

Only a few genetic changes were enough to change an ordinary stomach bug into the bacteria responsible for the plague.

Biology

How Mutant Viral Swarms Spread Disease

August 25, 2015

A new understanding of viral swarms is helping researchers predict how viruses will evolve and where disease is likely to spread.

origins of life

Hints of Life’s Start Found in a Giant Virus

July 10, 2014

Newly discovered specimens support a more ancient origin for viruses, perhaps all the way back to the origins of life.

Nasonia wasp wings.
evolution

Evolving With a Little Help From Our Friends

June 4, 2014

A new theory suggests that cooperation between a host and its microbes may be a significant evolutionary force.