Bird flu surges in Cambodia

There's a surge in cases and deaths from H5N1 bird flu in Cambodia - we hear what's the driver and how concerned we should be. Erik Karlsson, Head of Virology at the Pasteur Institute in Phnom Penh and director of the WHO’s H5 Reference Laboratory has been watching the uptick. An interstellar interloper has been spotted entering our solar system. Most likely a comet, and possibly visible in the…