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CAN REINDEER FLY? WHY IS SANTA CLAUS FAT? COULD SCIENTISTS CLONE THE PERFECT CHRISTMAS TREE? WAS THE STAR OF BETHLEHEM REALLY A COMET? WHY IS RUDOLPH'S NOSE RED? HOW DOES SANTA MANAGE TO DELIVER PRESENTS TO AN ESTIMATED 842 MILLION HOUSEHOLDS IN A SINGLE NIGHT? WHAT COULD WE DO TO GUARANTEE A WHITE CHRISTMAS EVERY YEAR? These are among the questions explored in an irresistibly witty book that illuminates the cherished rituals, legends, and icons of Christmas from a unique and fascinating perspective: science. Jennifer Reese Imagine sitting down to Christmas dinner -- roast bird, glittering tree, stockings hung by the chimney with care -- when your dinner partner gestures to the turkey thigh on your plate. Did you know, he asks, that the leg meat is dark because it contains myoglobin, an oxygen-storing molecule that a turkey needs in its muscular legs but not in its lazy breast? Game birds, on the other hand "spend more time on the wing, and their breast meat may be as dark as their drumsticks, seasoned with myoglobin throughout." Oh yes, he goes on, and that dreaded plum pudding is a descendant of "frumenty, a type of porridge made from hulled wheat spiced and boiled in milk," while the brandy sauce that makes it edible is of "huge interest to surface scientists" because of the unusual way the molecules bind together. As for the role of the chimney at Christmas, some psychologists believe it is a metaphor for the vagina: One reason people become depressed at Christmas may be that Santa's descent revives memories of their birth traumas. If this is your idea of great holiday chitchat, Roger Highfield, the science editor at London's Daily Telegraph , has written the book for you. The Physics of Christmas: From the Aerodynamics of Reindeer to the Thermodynamics of Turkey is a collection of short, bright essays that attempt to explain by means of science -- very broadly defined to include anthropology, psychology and sociology as well chemistry and biology -- all the wacky things people do during the holidays. No subject is too small for Highfield's enthusiastic scrutiny. He devotes one essay to the reasons Brussels sprouts are bitter; another to the architecture of snowflakes; yet another to the biology of reindeer. Sampled in small doses, these essays can be fascinating. You may have some dim notion that Santa Claus harks back to St. Nicholas, a holy man from the coast of Turkey. It is less well known that some academics posit that his suit is red because people liked to ingest psychedelic toadstools -- "the recreational and ritualistic drug of choice in parts of northern Europe before vodka was imported from the East." Santa's vivid robes, Highfield writes, are thought by some to "honor the red-and-white dot color scheme of this potent mind-altering mushroom." It will be a long time before I forget that the Lapps of northern Scandinavia -- who pulverize reindeer horns and market the stuff as an aphrodisiac -- actually have a genetic mutation rendering some of the men "unusually virile." Or that a cancer research organization has found that Christmas is the only meal of the year at which most British children eat sufficient amounts of vegetables. But read more than one or two of Highfield's pieces at a time, and you may find yourself reaching anxiously for another egg nog. Highfield is an engaging writer, with an obvious and endearing passion for his subject. But what he has assembled in this pretty volume is an intimidating mountain of random scientific trivia. Taken as a whole, it is more exhausting than explanatory. Like Christmas cheer -- "the fermentation of fruit and grain by the activity of fungi called yeasts" -- The Physics of Christmas is best enjoyed in moderation. -- Salon Why might Rudolph's nose have been red? Why do we actually give Christmas gifts? Why has smell become an important component in the Christmas shopping experience? Roger Highfield, science editor of London's Daily Telegraph and co-author of the highly acclaimed The Arrow of Time, has taken a long-overdue look at our most cherished holiday from the rigorous (but highly entertaining) viewpoint of a scientist. What are the thermodynamics involved in cooking a turkey? What are the likely celestial candidates for the Star of Bethlehem? Is the concept of a virgin birth scientifically feasible? What happens to us physically when we overindulge in alcohol? How does snow form? Why are we always depressed after Christmas? How does Santa manage to deliver all those presents in one night? (He has, in fact, little over two ten- thousands of a second to get between each of the 842 million households he must visit.) The Physics of Christmas is that rare science book that manages to be as delightful as it is informative. Why might Rudolph's nose have been red? Why do we actually give Christmas gifts? Why has smell become an important component in the Christmas shopping experience? Roger Highfield, science editor of London's Daily Telegraph and co-author of the highly acclaimed The Arrow of Time, has taken a long-overdue look at our most cherished holiday from the rigorous (but highly entertaining) viewpoint of a scientist. What are the thermodynamics involved in cooking a turkey? What are the likely celestial candidates for the Star of Bethlehem? Is the concept of a virgin birth scientifically feasible? What happens to us physically when we overindulge in alcohol? How does snow form? Why are we always depressed after Christmas? How does Santa manage to deliver all those presents in one night? (He has, in fact, little over two ten- thousands of a second to get between each of the 842 million households he must visit.) The Physics of Christmas is that rare science book that manages to be as delight... SCI055000 Can reindeer fly? Why is Santa Claus fat? Was the Star of Bethlehem really a comet? Will scientists succeed in creating the perfect Christmas tree by cloning? How do snowflakes form, and what could we do to guarantee an annual White Christmas? How does Santa manage to deliver presents to an estimated 842 million households in a single night? Why is Rudolph's nose red? These are among the questions explored in an irresistibly witty book that illuminates the cherished rituals, legends, and icons of Christmas from a unique and fascinating perspective: Science Can reindeer fly? Could scientists clone the perfect Christmas tree? How does Santa manage to deliver presents to an estimated 824 million households in a single night? These are among the questions explored in an irresistibly witty book that illuminates the cherished rituals, legends, and icons of Christmas from a unique and fascinating science. "Excellent entertainment for the Christmas connoisseurs in your circle." -- USA Today Christmas and the scientist : an introduction Santa and those reindeer The flame and tree Giving and shopping Festive fare Gluttony : Santa's genetics The Bethlehem star Snow Christmas spirit Christmas blues and seasonal moods Santa's science Christmas 2020 Appendix 1: The formula for Christmas Day Appendix 2: Is faith good for you?