Researchers from the National Institute of Standards and Technology (NIST) and Boston University have demonstrated a detector that counts single pulses of light, while simultaneously reducing false or “dark counts” to virtually zero.

Reported in the July 28, 2003, issue of Applied Physics Letters*, the advance provides a key technology needed for future development of secure quantum communications and cryptography.

Quantum communications and cryptography is a codemaker’s Holy Grai

Researchers at Ohio State found that endostatin has a dual effect on head and neck cancer cells – the compound prevented the cells from developing new blood vessels and also hindered the mechanism cancer cells use to migrate throughout the body and invade other tissues.

Head and neck cancers originate on the epithelium – the layer of tissue covering the outermost surfaces of the body, including the skin and mucus membranes. Kaposi’s sarcoma tumors arise from the endothelium, the cells that

Babies are more vulnerable to serious head injury during a fall than had been previously thought, according to new research that may also begin to help child abuse investigators distinguish between accidental and intentional injury.

Whitaker investigator Susan Margulies of the University of Pennsylvania found that rotational forces generated by a baby’s head hitting a hard surface can cause widespread, potentially serious brain injury. This can include internal bleeding, which can dama

When Miss Pearl finally returned to the Pearl Cays in Nicaragua last month after a three-year hiatus, it was cause for celebration. Best of all, her transmitter was still attached.

Named by local Nicaraguan participants and scientists from the New York-based Wildlife Conservation Society (WCS), Miss Pearl is a female hawksbill sea turtle, one of the most endangered of this ancient tribe of sea-going reptiles. In 2000, she had already distinguished herself by traveling farther than any other

“Diamond Graph” Corrects Long-Standing Errors of 3-D Bar Graphs

Looks can be deceiving. That’s one of the problems with today’s three-dimensional bar graph. While these graphs may look correct, researchers from the Johns Hopkins Bloomberg School of Public Health believe they are in fact inaccurate and misleading.

Currently, the 3-D bar graph is used in countless computer programs, scientific journals, and newspapers to display financial, medical, and other information in whi

Tobacco use is the leading cause of preventable death in the world today. With 4.9 million tobacco-related deaths per year, no other consumer product is as dangerous, or kills as many people, as tobacco. But with the adoption of a new, ground-breaking international treaty, the scene is now set to protect billions of people from the devastating impact of tobacco consumption and exposure to tobacco smoke.

May 21st 2003 was a historic day for global public health. At the 56th World Heal