The first is Albert Einstein's general theory of relativity, which describes the large-scale behaviour of matter in a curved spacetime. This theory is the basis for the standard model of big bang cosmology. The discoveryof gravitational waves at the LIGO observatory in the US (and then Virgo, in Italy) is only the most recent of this theory's many triumphs.The second is quantum mechanics. This theory describes the properties and behaviour of matter and radiation at their smallest scales. It is the basis for the standard model of particle physics, which builds up all the visible constituents of the universe out of collections of quarks, electrons andforce-carrying particles such as photons. The discovery of the Higgs boson at CERN in Geneva is only the most recent of this theory's many triumphs.But, while they are both highly successful, these two structures leave a lot of important questions unanswered. They are also based on two different interpretations of space and time, and are therefore fundamentally incompatible. We have two descriptions but, as far as we know, we've only ever hadone universe. What we need is a quantum theory of gravity.Approaches to formulating such a theory have primarily followed two paths. One leads to String Theory, which has for long been fashionable, and about which much has been written. But String Theory has become mired in problems. In this book, Jim Baggott describes the road less travelled: anapproach which takes relativity as its starting point, and leads to a structure called Loop Quantum Gravity. Baggott tells the story through the careers and pioneering work of two of the theory's most prominent contributors, Lee Smolin and Carlo Rovelli.

    Chaotic politics. Billionaire entrepreneurs. Award-winning journalist Brendan Borrell brings the defining story of our times alive through compulsively readable, first-time reporting on the players leading the fight against a vicious virus. The First Shots, soon to be the subject of an HBO limited series with superstar director and producer Adam McKay (Succession, Vice, The Big Short), draws on exclusive, high-level access to weave together the intense vaccine-race conflicts among hard-driving, heroic scientists and the epic rivalries among Washington power players that shaped 18 months of fear, resolve, and triumph. From infectious disease expert Michael Callahan, an American doctor secretly on the ground in Wuhan in January 2020 to gauge the terrifying ravages of Disease X; to Robert (Dr. Bob) Kadlec, one of Operation Warp Speed’s architects, whose audacious plans for the American people run straight into the buzz saw of the Trump White House factions; to Stéphane Bancel of upstart Moderna Therapeutics going toe-to-toe with pharma behemoth Pfizer, The First Shots lays bare, in a way we have not seen, the full stunning story behind the medical science “moon shot” of our lifetimes.

    The journey is scary, exciting, and, ultimately, encouraging."--Elizabeth Kolbert, Pulitzer Prize-winning author of The Sixth ExtinctionClimate models show that global crop production will decline every decade for the rest of this century due to drought, heat, and flooding. Water supplies are in jeopardy. Meanwhile, the world's population is expected to grow another 30 percent by midcentury. So how, really, will we feed nine billion people sustainably in the coming decades?Amanda Little, a professor at Vanderbilt University and an award-winning journalist, spent three years traveling through a dozen countries and as many U.S. states in search of answers to this question. Her journey took her from an apple orchard in Wisconsin to a remote control organic farm in Shanghai, from Norwegian fish farms to famine-stricken regions of Ethiopia.The race to reinvent the global food system is on, and the challenge is twofold: We must solve the existing problems of industrial agriculture while also preparing for the pressures ahead. Through her interviews and adventures with farmers, scientists, activists, and engineers, Little tells the fascinating story of human innovation and explores new and old approaches to food production while charting the growth of a movement that could redefine sustainable food on a grand scale. She meets small permaculture farmers and "Big Food" executives, botanists studying ancient superfoods and Kenyan farmers growing the country's first GMO corn. She travels to places that might seem irrelevant to the future of food yet surprisingly play a critical role--a California sewage plant, a U.S. Army research lab, even the inside of a monsoon cloud above Mumbai. Little asks tough questions: Can GMOs actually be good for the environment--and for us? Are we facing the end of animal meat? What will it take to eliminate harmful chemicals from farming? How can a clean, climate-resilient food supply become accessible to all?Throughout her journey, Little finds and shares a deeper understanding of the threats of climate change and encounters a sense of awe and optimism about the lessons of our past and the scope of human ingenuity.

    The thrill-seeking meteorologist and star of "Storm Chasers" has followed and faced down more violent tornadoes than anyone. "Into the Storm" brings readers into the mind of this man and his mission-collecting data that could save lives-in the terrifying, awe-inspiring world of big weather."Into the Storm" is also a fascinating look at the science of weather-what causes extreme conditions, its connection to climate change, and how a tornado gets its stovepipe structure.

    In Sun Moon Earth, astronomer Tyler Nordgren illustrates how this most seemingly unnatural of natural phenomena was transformed from a fearsome omen to a tourist attraction. From the astrologers of ancient China and Babylon to the high priests of the Maya, Sun Moon Earth takes us around the world to show how different cultures interpreted these dramatic events. Greek philosophers discovered eclipses' cause and used them to measure their world and the cosmos beyond. Victorian-era scientists mounted eclipse expeditions during the age of globe-spanning empires. And modern-day physicists continue to use eclipses to confirm Einstein's theory of relativity.Beautifully illustrated and lyrically written, Sun Moon Earth is the ideal guide for all eclipse watchers and star gazers alike.

    With 12 titles, the series appeals to students and adults alike, and many more who are, perhaps, different. Every Handy Answer Book provides hundreds of questions you (or someone close to you) wished you'd asked (generally accompanied by a similar number of answers) in a simple-to-use topical arrangement, with lots of photos (some of them in color) and illustrations (hopefully connected to the text).Our best-selling Handy Science Answer Book delivers an expert, easy-to-follow overview of the sciences and is an indispensable family reference, even in families given to dispensing with references.Information-hungry kids are sure to find The Handy Bug Answer Book and The Handy Dinosaur Answer Book delicious, especially on wheat. The new Handy Answer Book for Kids (and Parents), is devoted to more than 700 kid-specific questions and answers, including why is the sky blue and what is this thing hanging from my nose? It has range. Like kids.Science readers of any age will find the Handy titles on physics, weather, geography, the ocean, and space (outer) the cat's pajamas or, better yet, the parakeet's sweater, tiny though it may be.The very helpful Handy History Answer Book surveys, in nearly 700 pages, several thousand years of big events -- wars, inventions, religion, disasters, art, epidemics, exploration, catastrophes, philosophy, and many other things that seem to have happened mostly in the past. Find out who did what and why they did it. It's a wonderful book, and we're thinking we'd really like to sell more.Can any bird fly upside down? How many muscles does it take to smile? Why do the hands on a clock go clockwise? The new edition of our popular Handy Science covers hundreds of intriguing science and technology topics, from the inner workings of the human body to outer space and from math and computers to planes, trains, and automobiles. The basis for the entire Handy Answer Book series, Handy Science provides nearly 1,400 concise and easy-to-understand answers compiled from the great ready-reference file of the famous Science and Technology Department of the internationally renowned Carnegie Library of Pittsburgh, including old favorites that may have been updated, expanded, reorganized, corrected, or amended, depending. It's almost like they're entirely new questions and answers. The Department fields some 110,000 reference questions per year from perplexed Pittsburghers, and since 1905 or so has been collecting the answers in a very big file. The most interesting and commonly asked of these questions and answers are captured in Handy Science, a far more accessible and portable reference source for everyone in the family. And it's a great science turn-on for kids, who seem to love the book.