Explore Life Cycles!破盤出清
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Containing an eye-catching combination of cartoons, fun facts, and exciting projects, this hands-on guide explores how plants and animals are classified, how environment affects life cycles, and how all living things are codependent. Filled with information on fish, birds, insects, amphibians, plants, and fungi, the guide shows young scientists what happens inside cocoons and how frogs develop from tadpoles. With projects ranging from edible life cycles of insects to special butterfly habitats, this interactive guide brings the mysteries of life into kids’ hands. ...繼續閱讀美金： 12.95元 本類書籍銷售 Top 5
The Magic of Reality: How we know what’s really true
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Chasing Shadows: Mathematics, Astronomy, and the Early History of Eclipse Reckoning買到賺到網友評鑑5顆星，介紹給大家一本好書
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Lunar and solar eclipses have always fascinated human beings. Digging deep into history, Clemency Montelle examines the ways in which theoretical understanding of eclipses originated and how ancient and medieval cultures shared, developed, and preserved their knowledge of these awe-inspiring events. Eclipses were the celestial phenomena most challenging to understand in the ancient world. Montelle draws on original research -- much of it derived from reading primary source material written in Akkadian and Sanskrit, as well as ancient Greek, Latin, and Arabic -- to explore how observers in Babylon, the Islamic Near East, Greece, and India developed new astronomical and mathematical techniques to predict and describe the features of eclipses. She identifies the profound scientific discoveries of these four cultures and discusses how the societies exchanged information about eclipses. In constructing this history, Montelle establishes a clear pattern of the transmission of scientific ideas from one culture to another in the ancient and medieval world. Chasing Shadows is an invitingly written and highly informative exploration of the early history of scientific exploration.
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UFOs: Generals, Pilots and Government Officials Go on the Record限量出售
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An Air Force major is ordered to approach a brilliant UFO in his Phantom jet over Tehran. He repeatedly attempts to engage and fire on unusual objects heading right toward his aircraft, but his missile control is locked and disabled. Witnessed from the ground, this dogfight becomes the subject of a secret report by the U.S. Defense Intelligence Agency.
In Belgium, an Air Force colonel investigates a series of widespread sightings of unidentified triangular objects, and he sends F-16s to attempt a closer look. Many hundreds of eyewitnesses, including on-duty police officers, file reports, and a spectacular photograph of an unidentifiable craft is retrieved and analyzed.
Here at home, a retired chief of the FAA’s Accidents and Investigations Division reveals the agency’s response to a thirty-minute encounter between an aircraft and a gigantic UFO over Alaska, which occurred during his watch and is documented on radar.
Now all three of these distinguished men have written breathtaking, firsthand accounts about these extraordinary incidents. They are joined by Air Force generals and a host of high-level sources—including Fife Symington III, former governor of Arizona, and Nick Pope, former head of the British Defence Ministry’s UFO Investigative Unit—who have agreed to write their own detailed, personal stories about UFO encounters and investigations for the first time.
They are coming forward now because of Leslie Kean, an investigative reporter who has spent the last ten years studying the still unexplained UFO phenomenon. Kean reviewed hundreds of government documents, aviation reports, radar data, and case studies with corroborating physical evidence. She carefully examined scientifically analyzed photographs and interviewed dozens of high-level officials and aviation witnesses from around the world. With the support of former White House chief of staff John Podesta, Kean draws on her research to separate fact from fiction and to lift the veil on decades of U.S. government misinformation. Throughout, she presents irrefutable evidence that unknown flying objects—metallic, luminous, and seemingly able to maneuver in ways that defy the laws of physics—actually exist.
No one yet knows what these objects are, even though they affect aviation safety and possibly national security. The phenomenon has been officially acknowledged by numerous foreign governments. For these reasons and many others, Kean concludes that the UFO problem must be more widely recognized and ultimately solved through an unbiased scientific investigation. The material presented throughout this landmark book is sobering, unflinching, and undeniably awe-inspiring, and moves us toward a goal of properly addressing this worldwide mystery.
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