GREAT MOMENTS IN SCIENCE: It took a century of speculation and experimentation to discover gravitational waves, as Dr Karl explains.
From the Blog
DR KARL: Bacteria rotate their flagellum counter-clockwise, but unlike the motors that humans make, these dynamic microscopic molecular machines are constantly being rebuilt and reconfigured on the run.
GREAT MOMENTS IN SCIENCE: Seeing a plane get off the ground is an amazing sight! Dr Karl investigates the science of flying planes.