White-crowned sparrows showed far less interest in the typical song of their species from 1979 compared with the slightly changed version from 2003. Steve Mirsky reports.
In this episode eminent biologist Leroy Hood, founder of the Institute for Systems Biology, talks about systems biology, an approach to understanding complex biological systems in their entirety, with major implications for the future of medicine...
New method prevents the transfer of antibiotic resistance (killing the stronger bacteria in the process)
A smallpox-like virus that hopped from snakes to wild gerbils seems to have taken a snippet of the snake's DNA with it.
Mind Matters Mind Matters is Sciam.com's "seminar blog" on the sciences of mind and brain. Each week, top researchers describe their disciplines' most significant new findings -- and what they, as fellow researchers, find most exciting, maddening, significant, odd, or otherwise noteworthy in the research driving their fields...
A crescent of electrical activity spotted in rats may allow researchers to map the depressed brain
Using ice cores from Antarctica and Greenland, researchers have extended the climate record back 800,000 years and have shown that the world's largest island may have been sealed in ice for at least that long...
Discovery could lead to new treatments for the debilitating lung disorder
Hormones don't necessarily make men violent, but they do cause them to seek social dominance
DNA analysis and carbon dating of ancient Alaskan wolf remains shows that they went extinct 12,000 years ago, and today's Alaskan wolves are not their descendants. Steve Mirsky reports.
While tough on reefs directly in their path, hurricanes actually help reefs further afield by cooling oceans that have grown too warm
U.S. Department of Agriculture scientists have bred a new, roundworm-resistant habanero pepper variety that does away with the need for soil fumigants, but still makes jalapenos taste tame...
In some areas of the world, up to 63 percent of all the energy produced by plants—energy that would normally fuel native ecosystems—has been pressed into service for humankind...
A finding from a theoretical model of cooperative activity reveals that making an enterprise optional also makes it more sustainable
A newborn's intestines are devoid of bacteria. But within a short time, each baby becomes home to its own unique microbial community. Karen Hopkin reports.
Scientists successfully transfer the entire genetic code of one germ to another, bringing them a step closer to synthesizing life
Bacterial enzyme turns the tables on deadly retrovirus
A new tool allows scientists to map the changes in human intestinal bacteria over time in the precious first year of life
Finding could set the stage for ways to reverse damage in sufferers of the inherited fragile X syndrome
Carabid beetles can go one of two routes in getting past a snail's tough shell to the gooey body inside.