https://arab.news/c998s
Driven by a profound love of shapes and symmetries, Donald Coxeter (1907–2003) preserved the tradition of classical geometry when it was under attack by influential mathematicians who promoted a more algebraic and austere approach.
His essential contributions include the famed Coxeter groups and Coxeter diagrams, tools developed through his deep understanding of mathematical symmetry.
“The Atlas of Birds” captures the breathtaking diversity of birds, and illuminates their conservation status around the world.
Full-color maps show where birds are found, both by country and terrain, and reveal how an astounding variety of behavioral adaptations—from flight and feeding to nest building and song—have enabled them to thrive in virtually every habitat on Earth.
Maps of individual journeys and global flyways chart the amazing phenomenon of bird migration, while bird classification is explained using maps for each order and many key families.
Author: ERIN LIN
Over the course of the Vietnam War, the United States dropped 500,000 tonnes of bombs over Cambodia—more than the combined weight of every man, woman, and child in the country.
What began as a secret CIA infiltration of Laos eventually expanded into Cambodia and escalated into a nine-year war over the Ho Chi Minh trail fought primarily with bombs.
Fifty years after the last sortie, residents of rural Cambodia are still coping with the unexploded ordnance that covers their land. In “When the Bombs Stopped,” Erin Lin investigates the consequences of the US bombing campaign across post conflict Cambodia.
We see the last cookie in the box and think, can I take that? We reach a hand out. In the 2.1 seconds that this impulse travels through our brain, billions of neurons communicate with one another, sending blips of voltage through our sensory and motor regions.
Neuroscientists call these blips “spikes.” Spikes enable us to do everything: talk, eat, run, see, plan, and decide. In “The Spike,” Mark Humphries takes readers on the epic journey of a spike through a single, brief reaction.
When World War II ended, about 1 million people whom the Soviet Union claimed as its citizens were outside the borders of the USSR, mostly in the Western-occupied zones of Germany and Austria.
These “displaced persons,” or DPs—Russians, prewar Soviet citizens, and people from West Ukraine and the Baltic states forcibly incorporated into the Soviet Union in 1939—refused to repatriate to the Soviet Union despite its demands.
Thus began one of the first big conflicts of the Cold War. In “Lost Souls,” Sheila Fitzpatrick draws on new archival research, including Soviet interviews with hundreds of DPs, to offer a vivid account of this crisis, from the competitive maneuverings of politicians and diplomats to the everyday lives of DPs.
Author: Audrey Borowski
Described by Voltaire as “perhaps a man of the most universal learning in Europe,” Gottfried Wilhelm Leibniz (1646–1716) is often portrayed as a rationalist and philosopher who was wholly detached from the worldly concerns of his fellow men. Leibniz in His World provides a groundbreaking reassessment of Leibniz, telling the story of his trials and tribulations as an aspiring scientist and courtier navigating the learned and courtly circles of early modern Europe and the Republic of Letters.
Drawing on extensive correspondence by Leibniz and many leading figures of the age, Audrey Borowski paints a nuanced portrait of Leibniz in the 1670s, during his “Paris sojourn” as a young diplomat and in Germany at the court of Duke Johann Friedrich of Hanover. She challenges the image of Leibniz as an isolated genius, revealing instead a man of multiple identities whose thought was shaped by a deep engagement with the social and intellectual milieus of his time. Borowski shows us Leibniz as he was known to his contemporaries, enabling us to rediscover him as an enigmatic young man who was complex and all too human.
