Randall never gave sleep much thought. That is, until he began sleepwalking. One midnight crash into a hallway wall sent him on an investigation into the strange science of sleep.In Dreamland, Randall explores the research that is investigating those dark hours that make up nearly a third of our lives. Taking readers from military battlefields to children’s bedrooms, Dreamland shows that sleep isn't as simple as it seems. Why did the results of one sleep study change the bookmakers’ odds for certain Monday Night Football games? Do women sleep differently than men? And if you happen to kill someone while you are sleepwalking, does that count as murder?This book is a tour of the often odd, sometimes disturbing, and always fascinating things that go on in the peculiar world of sleep. You’ll never look at your pillow the same way again.

    We know they make your eyes blue, your hair curly or your nose straight. The media tells us that our genes control the risk of cancer, heart disease, alcoholism or Alzheimer's. The cost of DNA sequencing has plummeted from billions of pounds to a few hundred, and gene-based advances in medicine hold huge promise.So we've all heard of genes, but how do they actually work?According to legend, Ernest Hemingway was once given a six-toed cat by an old sea captain, and her distinctive descendants still roam the writer's Florida estate today. Scientists now know that the fault driving this profusion of digits lies in a tiny genetic control switch, miles away (in molecular terms) from the gene that 'makes' toes. And it's the same mistake that gives rise to multi-toed humans too.There are 2.2 metres of DNA inside every one of your cells, encoding roughly 20,000 genes. These are the 'recipes' that tell our cells how to make the building blocks of life, along with myriad control switches ensuring they're turned on and off at the right time and in the right place. But rather than a static string of genetic code, this is a dynamic, writhing biological library. And figuring out how it all works – how your genes make you, you – is a major challenge for researchers around the world.Drawing on stories ranging from six-toed cats and stickleback hips to wobbly worms and zombie genes, geneticist Kat Arney explores the how our genes work, creating a companion reader to the book of life itself.

    From blurry vision, to crooked teeth, ACLs that tear at alarming rates and spines that seem to spend a lifetime falling apart, it's a curious thing that human beings have beaten the odds as a species. After all, we're the only survivors on our branch of the tree of life. Why is it that human mothers have such a life-endangering experience giving birth? And why are there entire medical specialties for teeth and feet? In this funny, wide-ranging and often surprising book, biologist Alex Bezzerides tells us just where we inherited our adaptable, achy, brilliant bodies in the process of evolution.The book traces the delightfully unexpected answers to these questions and many more:Why do we blink?Why don't our teeth regularly fit in our mouths?Why do women menstruate when so many other mammals don't?Why did humans stand up on two legs in the first place?

    Adam Brochert, MD-who scored in the 99th percentile on the Step 2 USMLE-and Theodore X. O'Connell, MD-author of several review and clinical reference books-present essential questions and answers covering the important concepts you need to know to score well on the USMLE Step 2 exam: key conditions you will be expected to recognize, all specialty and subspecialty topics, and necessary clinical concepts.Learn the most important questions and answers with the proven format of the highly acclaimed Secrets Series.Master all specialty and subspecialty topics covered on Step 2.Identify key facts and secrets using the Top 100 Secrets chapter.Review material quickly and easily thanks to bulleted lists, algorithms, and illustrations.Apply the pearls, tips, memory aids, and secrets from well-known and highly popular authors, Adam Brochert, MD and Theodore X. O'Connell, MD. Find information quickly with a second color highlighting chapter and section titles, legends, bullets and icons, and key terms.Consult the book wherever you go thanks to the portable size that fits in your lab coat pocket.

    Why does music evoke such powerful moods? The answers are at last be- coming clear, thanks to revolutionary neuroscience and the emerging field of evolutionary psychology. Both a cutting-edge study and a tribute to the beauty of music itself, This Is Your Brain on Music unravels a host of mysteries that affect everything from pop culture to our understanding of human nature, including: • Are our musical preferences shaped in utero? • Is there a cutoff point for acquiring new tastes in music? • What do PET scans and MRIs reveal about the brain’s response to music? • Is musical pleasure different from other kinds of pleasure?This Is Your Brain on Music explores cultures in which singing is considered an essential human function, patients who have a rare disorder that prevents them from making sense of music, and scientists studying why two people may not have the same definition of pitch. At every turn, this provocative work unlocks deep secrets about how nature and nurture forge a uniquely human obsession.