Life Sciences

Does nature or nurture determine an ant's place in society? A little of both, for one species of harvester ant, at least. This kind of flexibility allows the colony to respond to changing conditions successfully.

ASU researchers are using new genetic tools to trace the evolution of tuberculosis, a bacterium that claims millions of lives each year. Their study of the past can help us develop better treatments for the disease in the future. (photo: Janice Carr, CDC) --by Rebecca Howe

A male jumping spider guards his mate in this photo taken by an ASU researcher.

A male jumping spider cannot hide his intentions. A brilliant red face signals that the spider is in search of a mate.

Plants need sunlight to produce energy, but too much light can injure or kill them. Plants use a sophisticated process to defend against this damage. ASU scientists designed a molecule that mimics this process in order to understand adaptive self-regulation, a critical feature for advancing nanotechnology. --by Skip Derra

In the world of birds, where fancy can be as fleeting as flight, the color of the bird apparently has a profound effect on more than just its image. A new study of barn swallows reveals it also affects the bird's physiology. --by Skip Derra

Microbial symbionts live in the guts of animals, the interiors of corals, and the roots of plants. They help plants take up nutrients and help cows break down cellulose, but they can also be harmful to their hosts. Stan Faeth wants to understand the relationship between symbionts, their hosts, and their role in everything from conservation to cancer cures. --by Margaret Coulombe

Room for experiments on the Space Shuttle or the International Space Station is hard to come by. Sometimes scientists have to mimic the effects of space right here on Earth. --by Margaret Coulombe

Scientists have learned plenty about how life in outer space affects the human body. But what about germs and other nasty microorganisms? Cheryl Nickerson wants to know how disease-causing pathogens themselves are affected by space travel. --by Margaret Coulombe

One day soon a biosensing nanodevice may eliminate long lines at airport security checkpoints and revolutionize health screenings for diseases like anthrax, cancer and antibiotic resistant Staphylococcus aureus (MRSA). Even more incredible than the device itself, is that it is based on the world's tiniest rotary motor: a biological engine measured on the order of molecules. --by Margaret Coulombe (Read the full text in SOLS News)