Big Ideas: First Approved Ebola Vaccine and Air Pollution Linked to Brain Cancer

The European Medicines Agency (EMA) approved the Ebola vaccine by U.S. pharmaceutical company Merck for wider distribution. The drug, which helped control deadly outbreaks of the virus, was previously administered to hundreds of thousands of people in the Democratic Republic of the Congo. Plus, scientists voiced concern about a threat to astronomy from "megaconstellations" after SpaceX launched 60 Starlink satellites Monday. And, Singapore scientists produced in-vitro human skin "as a solution to testing on skin without using animal or human skin."