Category: Health / Science

How is brain surgery performed?

Dr. Greg Foltz of the Swedish Neuroscience Institute describes the routine and frequency of brain surgery. Computer brain mapping produces a three-dimensional image of a patient’s brain. Once inside, physical mapping occurs. A precise...

Osteoarthritis: causes and treatments

Osteoarthritis (OA), also known as degenerative joint disease, is the most common form of arthritis—the medical term for a wide variety of disorders that involve inflammation of a joint. OA is a process that...

Brave new world of nanotechnology

Manmade nanoparticles are being added to more and more foods, drugs, and other products and are ultimately finding their way into the environment. The name of these minuscule particles comes from the word “nanometer,”...

Do cellphones cause cancer?

Cell phones are more widespread than ever, and the debate about whether they can cause brain cancer continues unabated. With the results of each new study, scientists and advocates on both sides of the...

Secrets of the X chromosome

The sequence of DNA that we inherit from our parents encodes directions for making our cells and giving us specific traits. Identical twins have the same DNA sequence, so how can one twin end...

$500,000 of Calcium

The rare isotope Calcium-48 plays a key role in the creation of superheavy elements. But it’s not easy to obtain. Filmed at the Joint Institute for Nuclear Research, in Dubna, Russia. Calcium-48 is a...

Should you stick with Teflon?

The chemical polytetrafluoro­ethylene (PTFE), with nonstick properties, was discovered accidentally in 1938 by a DuPont chemist working with refrigerant gases. Shortly after, PTFE (dubbed Teflon) appeared as a coating on cookware and other products,...