Finding a cure for Alzheimer's is an extremely complex task. Scientists still do not know what causes the disease. Once the symptoms appear, the gradual memory loss is inevitable and available drugs can only slow down the process. Researchers, however, believe the disease develops slowly, over years, so detecting it before the symptoms appear may give the patients a better chance of a longer life. VOA's George Putic reports.
Feb. 4 is World Cancer Day, an annual opportunity to raise awareness of cancer and encourage its prevention, detection and treatment. In the area of detection, Faith Lapidus reports that researchers at the Johns Hopkins Kimmel Cancer Center in Baltimore, Maryland, are developing a blood test that screens for eight different types of cancer.
A 2013 study predicted that the polar bear, the largest land carnivore in the world, will go extinct in the next 30 to 40 years. Their fate is tied directly to climate change and the loss of the arctic ice that is their hunting ground. VOA's Kevin Enochs reports, and Bronwyn Benito narrates.
Just like every other health technology, prosthetics are now able to do things that were unimaginable a few years ago. The advances are happening with the help of machine learning, but also through human ingenuity. VOA's Kevin Enochs reports.