ImmuneSo what, exactly, IS your immune system? Second only to the human brain in its complexity, it is one of the oldest and most critical facets of life on Earth. Without it, you would die within days. In this book, Philipp Dettmer, the brains behind the most popular science channel on YouTube, takes readers on a journey through the fortress of the human body and its defences. Each chapter delves deeply into an element of the immune system, including

and reveals what it takes to go the next level

In returning to this pre-industrial practice

Far from an obedient homemaker

he was a well-loved children's TV star

so when Dr Benton Reckitt is asked to give a second opinion on the apparently natural death of young Lizzie Rees

modern-day samurai swimmers and even an Icelandic fisherman who improbably survived a six-hour swim in the wintry Atlantic

'Follow This Thread' traces dozens of real and historical mazes

then with his eccentric aunt

'Unbuttoned' and 'Undecided'

An SAS unit codenamed Zero 22

and the challenges of identity

Or the efforts she made to infiltrate the local mums' social groups and when she embarrassingly forgot her own new-born baby's name