Amber is the collective name for a suite of programs that allow users to carry out molecular dynamics simulations, particularly on biomolecules. None of the individual programs carries this name, but the various parts work reasonably well together, and provide a powerful framework for many common calculations. The term Amber is also used to refer to the empirical force fields that are implemented here. It should be recognized, however, that the code and force field are separate: several other computer packages have implemented the Amber force fields, and other force fields can be implemented with the Amber programs. Further, the force fields are in the public domain, whereas the codes are distributed under a license agreement. The Amber software suite is divided into two parts: AmberTools21, a collection of freely available programs mostly under the GPL license, and Amber20, which is centered around the pmemd simulation program, and which continues to be licensed as before, under a more restrictive license. Amber20 represents a significant change from the most recent previous version, Amber18. (We have moved to numbering Amber releases by the last two digits of the calendar year, so there are no odd-numbered versions.) Please see https://ambermd.org for an overview of the most important changes. AmberTools is a set of programs for biomolecular simulation and analysis. They are designed to work well with each other, and with the “regular” Amber suite of programs. You can perform many simulation tasks with AmberTools, and you can do more extensive simulations with the combination of AmberTools and Amber itself. Most components of AmberTools are released under the GNU General Public License (GPL). A few components are in the public domain or have other open-source licenses. See the README file for more information.

The Newbery Medal–winning author of Good Masters! Sweet Ladies! gives readers a virtuoso performance in verse in this profoundly original epic pitched just right for fans of poetry, history, mythology, and fantasy. Welcome to ancient Greece as only genius storyteller Laura Amy Schlitz can conjure it. In a warlike land of wind and sunlight, “ringed by a restless sea,” live Rhaskos and Melisto, spiritual twins with little in common beyond the violent and mysterious forces that dictate their lives. A Thracian slave in a Greek household, Rhaskos is as common as clay, a stable boy worth less than a donkey, much less a horse. Wrenched from his mother at a tender age, he nurtures in secret, aided by Socrates, his passions for art and philosophy. Melisto is a spoiled aristocrat, a girl as precious as amber but willful and wild. She’ll marry and be tamed—the curse of all highborn girls—but risk her life for a season first to serve Artemis, goddess of the hunt. Bound by destiny, Melisto and Rhaskos—Amber and Clay—never meet in the flesh. By the time they do, one of them is a ghost. But the thin line between life and death is just one boundary their unlikely friendship crosses. It takes an army of snarky gods and fearsome goddesses, slaves and masters, mothers and philosophers to help shape their story into a gorgeously distilled, symphonic tour de force. Blending verse, prose, and illustrated archeological “artifacts,” this is a tale that vividly transcends time, an indelible reminder of the power of language to illuminate the over- and underworlds of human history.

FINALIST FOR THE 2021 NATIONAL BOOK AWARD FOR YOUNG PEOPLE'S LITERATURE A debut YA novel-in-verse by Amber McBride, Me (Moth) is about a teen girl who is grieving the deaths of her family, and a teen boy who crosses her path. Moth has lost her family in an accident. Though she lives with her aunt, she feels alone and uprooted. Until she meets Sani, a boy who is also searching for his roots. If he knows more about where he comes from, maybe he’ll be able to understand his ongoing depression. And if Moth can help him feel grounded, then perhaps she too will discover the history she carries in her bones. Moth and Sani take a road trip that has them chasing ghosts and searching for ancestors. The way each moves forward is surprising, powerful, and unforgettable. Here is an exquisite and uplifting novel about identity, first love, and the ways that our memories and our roots steer us through the universe.

A must-have volume for all wine lovers and those who love orange wine. Written by renowned orange wine expert and award winning writer Simon J. Woolf, Amber Revolution is the world's first book to tell the full, forgotten story of this ancient wine (white wine made like a red wine) and its modern struggle to gain acceptance. It is a tale of lost identity, the fight for survival, and pioneering winemakers--from the Caucasus to the Adriatic. White grapes are left in contact with their skins for days, weeks or months during fermentation, creating stunning complexity, unusual aromas and intense flavors. The extended skin contact gives these wines bold amber, russet, or orange tints. The technique is ancient, but the hype is new and fast growing. This book includes profiles of 180 of the best producers from 20 countries worldwide and is crammed full of all the information you need to find the best orange wines worldwide together with tips for how to buy, enjoy, food-match and age them. Beautifully illustrated with over 150 specially commissioned photos, Amber Revolution is an essential reference work for any wine lover, sommelier, retailer or producer who loves orange wine. Written by renowned orange wine expert and award winning writer Simon J. Woolf, Amber Revolution is the world's first book to tell the full, forgotten story of this ancient wine (white wine made like a red wine) and its modern struggle to gain acceptance. It is a tale of lost identity, the fight for survival, and pioneering winemakers--from the Caucasus to the Adriatic. White grapes are left in contact with their skins for days, weeks or months during fermentation, creating stunning complexity, unusual aromas and intense flavors. The extended skin contact gives these wines bold amber, russet, or orange tints. The technique is ancient, but the hype is new and fast growing. This book includes profiles of 180 of the best producers from 20 countries worldwide and is crammed full of all the information you need to find the best orange wines worldwide together with tips for how to buy, enjoy, food-match and age them. Beautifully illustrated with over 150 specially commissioned photos, Amber Revolution is an essential reference work for any wine lover, sommelier, retailer or producer who loves orange wine.

NATIONAL BESTSELLER • The trendsetting designer known for her effortless style shares the secrets of the art of layering, with more than 250 gorgeous photographs of her signature interiors. “Livability is my true north. The materials I use time and again all change with age and wear. Not only is that okay, it’s how you achieve more than a re-creation of what you’ve already seen, or what somebody else has done. You can do this, too—I promise.”—from the introduction Designing a room with all the vibes comes down to how you layer your décor. The more you can mix the elements of your room—your pillows, objects, patterns, and lighting—the more finished it’ll feel: not too new, not too old, but just right. Known for her eclectic approach that stems from her California cool, Amber Lewis trains your eye in Made for Living, offering friendly advice on everything from nailing that perfect shade of paint to mismatching patterns with wild abandon to choosing a stone finish for new countertops. These pages will help you design a home that's made to be lived in.

In a magical world where the sun never sets, a gifted girl dreams to be in the royal court but once inside, she may not be prepared for the drama. Sylvie has always known she deserves more. Out in the permanent twilight of the Dusklands, her guardians called her power to create illusions a curse. But Sylvie knows it gives her a place in Coeur d’Or, the palais of the Amber Empress and her highborn legacies. So Sylvie sets off toward the Amber City, a glittering jewel under a sun that never sets, to take what is hers. But her hope for a better life is quickly dimmed. The empress invites her in only as part of a wicked wager among her powerful courtiers. Sylvie must assume a new name, Mirage, and begin to navigate secretive social circles and deadly games of intrigue in order to claim her spot. Soon it becomes apparent that nothing is as it appears and no one, including her cruel yet captivating sponsor, Sunder, will answer her questions. As Mirage strives to seize what should be her rightful place, she’ll have to consider whether it is worth the price she must pay . . . Lyra Selene weaves a lush and thrilling story of sacrifice, secrets, and star-crossed love set in a Parisian-inspired world where the sun never sets in this remarkable YA fantasy debut. Praise for Amber & Dusk “A shimmering tapestry of language, woven through with soaring beauty and subtle menace.” —Sara Holland, New York Times–bestselling author of the Everless series “Full of riotous color, fantastical locations, and surprising plot twists.” —School Library Journal

*A NEW YORK TIMES BESTSELLER AND INDIE NEXT PICK* Writer and performer on Late Night with Seth Meyers Amber Ruffin writes with her sister Lacey Lamar with humor and heart to share absurd anecdotes about everyday experiences of racism. Now a writer and performer on Late Night with Seth Meyers and host of The Amber Ruffin Show, Amber Ruffin lives in New York, where she is no one's First Black Friend and everyone is, as she puts it, "stark raving normal." But Amber's sister Lacey? She's still living in their home state of Nebraska, and trust us, you'll never believe what happened to Lacey. From racist donut shops to strangers putting their whole hand in her hair, from being mistaken for a prostitute to being mistaken for Harriet Tubman, Lacey is a lightning rod for hilariously ridiculous yet all-too-real anecdotes. She's the perfect mix of polite, beautiful, petite, and Black that apparently makes people think "I can say whatever I want to this woman." And now, Amber and Lacey share these entertainingly horrifying stories through their laugh-out-loud sisterly banter. Painfully relatable or shockingly eye-opening (depending on how often you have personally been followed by security at department stores), this book tackles modern-day racism with the perfect balance of levity and gravity.

From the author of When I Was You comes a spine-tingling new thriller about a mother’s worst nightmare come true, when her teenage daughter goes to a sleepover and doesn’t come back. Whitney had some misgivings when she dropped her increasingly moody teenage daughter, Amelia, off at Lauren’s house. She’d never met the parents, and usually she’d go in, but Amelia clearly wasn’t going to let something so humiliating happen, so instead Whitney waved to her daughter before pulling away from the little house with the yellow roses in front. But when she goes back the next day, an elderly couple answers the door—Amelia and Lauren aren’t there, and this couple swears they never were, that she’s at the wrong house. As Whitney searches for Amelia, she uncovers a trail of lies her daughter has told her—from the Finsta account to rumors of a secret relationship. Does she really even know this girl she’s raised? And Amelia’s not the only one with secrets. Could Whitney’s own demons have something to do with her daughter’s disappearance, and can Whitney find her before it’s too late?

In this wide-ranging and intellectually lively essay, Amber Husain asks if our obsession with replacement is the very thing that is keeping the world in stasis. And, if so, with what might we replace our obsession with replacement? With references spanning the avant-garde art tec--futurism, and Effective Altruism, and taking in writers from Aristotle to Anne Boyer, Replace Me is a celebration of the possibilities for political transformation inherent in the act of embracing one's own replaceability.