New warnings, familiar faces, and radio pulses

Five years after the WHO pandemic announcement, an H5N1 call to arms from global health leaders. Also, the oldest western European face is found, the oldest impact crater possibly identified, and strange radio signals from space maybe explained.Presenter: Roland Pease Producer: Alex Mansfield Production Coordinator: Jana Bennett-Holesworth(Image: US To Boost Egg Imports As Prices Soar On Bird Flu. Credit: Bloomberg via Getty).