Rapid Method For Judging Nanotube Purity Developed

Rapid Method For Judging Nanotube Purity Developed

Sea Level On The Rise, Say Some

Sea Level On The Rise, Say Some

The climate system, and in particular sea level, may be responding more quickly to rising carbon emissions than climate scientists have estimated with climate models.

An international team of climate scientists has cautioned against suggestions that the Intergovernmental Panel on Climate Change (IPCC) has previously overestimated the rate of climate change.

Electrons Travel Through Proteins Like Urban Commuters

Electrons Travel Through Proteins Like Urban Commuters

For Duke University theoretical chemist David Beratan, the results of his 15 years of studying how electrons make their way through some important protein molecules can be summed up with an analogy: how do big city dwellers get from here to there?

It's often swiftest to take the subway, Beratan notes, but riders may sometimes elect to alter their route by exiting the train for a short cab ride or a walk down the street. And they also may have to work around a route that is temporarily out of service.

Concern Over Safety Of Commercial Ultrasound Scans

Expectant parent' desire to see images of their unborn children has given rise to commercial companies offering keepsake ultrasound scans without medical supervision, often referred to as "boutique ultrasonography."

In a special report in this week's British Medical Journal, journalist Geoff Watts considers whether this non-medical use of the technique can be justified.

Scientists Should Adopt Codes Of Ethics, Bioethicist Says

Scientists Should Adopt Codes Of Ethics, Bioethicist Says

The time is ripe for scientific organizations to adopt codes of ethics, according to a scientist and bioethicist from Wake Forest University School of Medicine in the current issue of Science and Engineering Ethics.

"Medical practice and human subject research is influenced by the Hippocratic tradition," said Nancy L. Jones, Ph.D., "but no similar code of ethics has been formalized for the life and biomedical sciences. Like the Hippocratic oath, a code of ethics for the life sciences can provide a continual standard to shape the ethical practice of science."

How Carbon Dioxide Kept Earth From Being Mars

How Carbon Dioxide Kept Earth From Being Mars

Carbon dioxide, a greenhouse gas that has become a bane of modern society, may have saved Earth from freezing over early in the planet's history, according to the first detailed laboratory analysis of the world's oldest sedimentary rocks.

Landmark Addiction Study Finds People Underestimate Power Of Drug Cravings

Landmark Carnegie Mellon Addiction Study Finds People Underestimate Power of Drug Cravings

Physicists Find Way To 'See' Extra Dimensions

Physicists Find Way To 'See' Extra Dimensions

Peering backward in time to an instant after the big bang, physicists at the University of Wisconsin-Madison have devised an approach that may help unlock the hidden shapes of alternate dimensions of the universe.