Showing results by narrator "Helen McAlpine" in Science & Engineering

Emma Gray was just 23 when she moved to an isolated farm in Northumberland, becoming Britain's youngest solo shepherdess. In the seasons that followed, Emma fell in love with its rolling fields, sycamore trees and sturdy farmhouse, where she tended her sheep and trained her dogs - and even found romance along the way. But when Emma finds herself suddenly alone again, heartbroken, mourning the loss of loved ones and recovering from a serious accident, she can't help but wonder if her isolated existence is still such a sensible idea.

The human body is like an exceedingly well-fortified castle, defended by billions of soldiers - some live for less than a day, others remember battles for decades, but all are essential in protecting us from disease. This hidden army is our immune system, and without it we could not survive the eternal war between us and our microscopic enemies. Immune explores the incredible arsenal that lives within us - how it knows what to attack and what to defend and how it kills everything from the common cold to the plague bacterium.