A blueprint for federal research on the potential health and environmental impacts of nanomaterials debuted today.

Hot fingers: That appears to be one consequence of big bodies.

Toothless Asian whales find themselves being protected by fairly toothless regulations.

It took herculean effort, but Madagascar crafters created an extraordinary piece of woven art from spider silk.

An accelerator-based neutron-production system is being designed to cull bombs at risk of exploding prematurely — and make the feedstock for a major isotope used in nuclear medicine.

Of all the radioactive isotopes used in medical diagnostics, none plays a more pivotal role than technetium-99m. Each weekday, hospitals and clinics around the world use it to perform about 60,000 diagnostic procedures. Used in about 80 percent of nuclear imaging tests, the isotope is one of modern medicine’s major tools for detecting, evaluating and treating cancers, heart disease and other serious illnesses. It helps doctors lengthen patients’ lives. Trouble is, Tc-99m itself has a very short life. Radioactive decay depletes it by half every six hours. The feedstock that supplies it â€... (p. 16)