Life's Ratchet

Life's Ratchet
Title Life's Ratchet PDF eBook
Author Peter M. Hoffmann
Publisher
Total Pages 290
Release 2012-10-30
Genre Science
ISBN 0465022537

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Life, Hoffman argues, emerges from the random motions of atoms filtered through the sophisticated structures of our evolved machinery. People are essentially giant assemblies of interacting nanoscale machines.

The Big Ratchet

The Big Ratchet
Title The Big Ratchet PDF eBook
Author Ruth DeFries
Publisher Basic Books
Total Pages 289
Release 2014-09-09
Genre Science
ISBN 0465080936

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How an ordinary mammal manipulated nature to become technologically sophisticated city-dwellers -- and why our history points to an optimistic future in the face of environmental crisis Our species long lived on the edge of starvation. Now we produce enough food for all 7 billion of us to eat nearly 3,000 calories every day. This is such an astonishing thing in the history of life as to verge on the miraculous. The Big Ratchet is the story of how it happened, of the ratchets -- the technologies and innovations, big and small -- that propelled our species from hunters and gatherers on the savannahs of Africa to shoppers in the aisles of the supermarket. The Big Ratchet itself came in the twentieth century, when a range of technologies -- from fossil fuels to scientific plant breeding to nitrogen fertilizers -- combined to nearly quadruple our population in a century, and to grow our food supply even faster. To some, these technologies are a sign of our greatness; to others, of our hubris. MacArthur fellow and Columbia University professor Ruth DeFries argues that the debate is the wrong one to have. Limits do exist, but every limit that has confronted us, we have surpassed. That cycle of crisis and growth is the story of our history; indeed, it is the essence of The Big Ratchet. Understanding it will reveal not just how we reached this point in our history, but how we might survive it.

This Journal Belongs to Ratchet

This Journal Belongs to Ratchet
Title This Journal Belongs to Ratchet PDF eBook
Author Nancy J. Cavanaugh
Publisher Sourcebooks, Inc.
Total Pages 322
Release 2013-04-02
Genre Juvenile Fiction
ISBN 1402281080

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Move over Diary of a Wimpy Kid—there's a new journal in town and it belongs to Ratchet. "A book that is full of surprises...Triumphant enough to make readers cheer; touching enough to make them cry." —Kirkus, STARRED Review If only getting a new life were as easy as getting a new notebook. But it's not. It's the first day of school for all the kids in the neighborhood. But not for me. I'm homeschooled. That means nothing new. No new book bag, no new clothes, and no new friends. The best I've got is this notebook. I'm supposed to use it for my writing assignments, but my dad never checks. Here's what I'm really going to use it for: Ratchet's Top Secret Plan Turn my old, recycled, freakish, friendless life into something shiny and new. This Florida State Book Award gold medal winner is a heartfelt story about an unconventional girl's quest to make a friend, save a park, and find her own definition of normal.

Ratchetdemic

Ratchetdemic
Title Ratchetdemic PDF eBook
Author Christopher Emdin
Publisher Beacon Press
Total Pages 264
Release 2021-08-10
Genre Education
ISBN 0807089516

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A revolutionary new educational model that encourages educators to provide spaces for students to display their academic brilliance without sacrificing their identities Building on the ideas introduced in his New York Times best-selling book, For White Folks Who Teach in the Hood, Christopher Emdin introduces an alternative educational model that will help students (and teachers) celebrate ratchet identity in the classroom. Ratchetdemic advocates for a new kind of student identity—one that bridges the seemingly disparate worlds of the ivory tower and the urban classroom. Because modern schooling often centers whiteness, Emdin argues, it dismisses ratchet identity (the embodying of “negative” characteristics associated with lowbrow culture, often thought to be possessed by people of a particular ethnic, racial, or socioeconomic status) as anti-intellectual and punishes young people for straying from these alleged “academic norms,” leaving young people in classrooms frustrated and uninspired. These deviations, Emdin explains, include so-called “disruptive behavior” and a celebration of hip-hop music and culture. Emdin argues that being “ratchetdemic,” or both ratchet and academic (like having rap battles about science, for example), can empower students to embrace themselves, their backgrounds, and their education as parts of a whole, not disparate identities. This means celebrating protest, disrupting the status quo, and reclaiming the genius of youth in the classroom.

Every Life Is on Fire

Every Life Is on Fire
Title Every Life Is on Fire PDF eBook
Author Jeremy England
Publisher Basic Books
Total Pages 185
Release 2020-09-15
Genre Science
ISBN 1541699009

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A preeminent physicist unveils a field-defining theory of the origins and purpose of life. Why are we alive? Most things in the universe aren't. And everything that is alive traces back to things that, puzzlingly, weren't. For centuries, the scientific question of life's origins has confounded us. But in Every Life Is on Fire, physicist Jeremy England argues that the answer has been under our noses the whole time, deep within the laws of thermodynamics. England explains how, counterintuitively, the very same forces that tend to tear things apart assembled the first living systems. But how life began isn't just a scientific question. We ask it because we want to know what it really means to be alive. So England, an ordained rabbi, uses his theory to examine how, if at all, science helps us find purpose in a vast and mysterious universe. In the tradition of Viktor Frankl's Man's Search for Meaning, Every Life Is on Fire is a profound testament to how something can come from nothing.

The Ratchet of Science

The Ratchet of Science
Title The Ratchet of Science PDF eBook
Author Roy Yorke Calne
Publisher Nova Science Publishers
Total Pages 0
Release 2014
Genre Science
ISBN 9781631178610

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Science, like the universe, is expanding and accelerating. This book outlines the many gifts that science has bestowed upon our quality of life ranging from health, travel, and communication, but it also raises concerns about the sometimes awful consequences of science. These may be accidental and unanticipated, or deliberate, as with the development of new weapons that carry dreadful potential. After the Second World War, a chasm separated the regimes of the East and West, and the possibility that the world was heading towards a catastrophic atomic conflict was a serious worry. Science has a responsibility for its consequences, even if these are not anticipated. In view of the history of science and our current relationship with scientific advances, it would be prudent to attempt a continuing peaceful dialogue to avoid future confrontation. For the writing of this book, the author made many in-depth studies of correspondence between scientists and philosophers, including, most notably, Albert Einstein and Bertrand Russell, at Churchill College Archives in Cambridge.

The Black Book of Secrets

The Black Book of Secrets
Title The Black Book of Secrets PDF eBook
Author F. E. Higgins
Publisher Macmillan + ORM
Total Pages 301
Release 2010-07-14
Genre Juvenile Fiction
ISBN 1429930802

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A boy arrives at a remote village in the dead of night. His name is Ludlow Fitch—and he is running from a most terrible past. What he is about to learn is that in this village is the life he has dreamed of—a safe place to live, and a job, as the assistant to a mysterious pawnbroker who trades people's deepest, darkest secrets for cash. Ludlow's job is to neatly transcribe the confessions in an ancient leather-bound tome: The Black Book of Secrets. Ludlow yearns to trust his mentor, who refuses to disclose any information on his past experiences or future intentions. What the pawnbroker does not know is, in a town brimming with secrets, the most troubling may be held by his new apprentice.