Researchers and doctors are using incredibly tiny particles — fluorescent nanoparticles — in a quest for new ways to fight cancer. Some nanoparticles, just billionths of a meter across, are engineered to carry special dye that glows when it hits cancer cells. Oregon State University scientists say this makes it easier for surgeons to find and remove tumors. Iryna Matviichuk visited Portland and learned the new procedure is closer to testing in human patients. Anna Rice narrates her report.
One of the important aspects of gauging the damage being done to the world's ecosystems by climate change is knowing the current status of those systems. So a Britain-based charity is about to embark on a seven-week expedition to gauge the health of one of the world's few remaining pristine reefs. VOA's Kevin Enochs reports.
The World Health Organization reports that more than 700 people have been sickened with Ebola in the Democratic Republic of Congo. And now, neighboring countries of South Sudan and Rwanda are bracing for the virus to spread. But, half a world away, U.S. researchers are hoping to develop a new, long-lasting vaccine against Ebola. VOA's Carol Pearson has more.