Of the forty mammal species known to have vanished in the world in the last 200 years, almost half have been Australian. Our continent has the worst record of mammal extinctions, with over 65 mammal species having vanished in the last 50 000 years. It began with the great wave of megafauna extinctions in the last ice-age, and continues today, with many mammal species vulnerable to extinction. The question of why mammals became extinct, and why so many became extinct in Australia has been debated by experts for over a century and a half and we are no closer to agreement on the causes. This book introduces readers to the great mammal extinction debate. Chris Johnson takes us on a detective-like tour of these extinctions, uncovering how, why and when they occurred.
Of the forty mammal species known to have vanished in the world in the last 200 years, almost half have been Australian. Our continent has the worst record of mammal extinctions, with over 65 mammal species having vanished in the last 50 000 years. It began with the great wave of megafauna extinctions in the last ice-age, and continues today, with many mammal species vulnerable to extinction. The question of why mammals became extinct, and why so many became extinct in Australia has been debated by experts for over a century and a half and we are no closer to agreement on the causes. This book introduces readers to the great mammal extinction debate. Chris Johnson takes us on a detective-like tour of these extinctions, uncovering how, why and when they occurred.
Alexander the Great is a towering figure in world history, but despite our long-held fascination with him, his burial site is unknown. The search for Alexander's tomb began soon after his untimely dea
《原則：生活與工作》作者Ray Dalio商管新書。透過研究美國、英國等大國長年的政治、經濟與歷史變動，歸納出全球經濟危機發生的循環脈絡，試圖摸索出世界未來走向及與應對之策。From the #1 New York Times bestselling author of Principles and legendary investor Ray Dalio, who has spent half a century studying global markets, The Changing World Order examines history’s most turbulent economic and political periods to reveal why the times ahead will likely be radically different from those we’ve experienced in our lifetimes.A few years ago, renowned investor Ray Dalio began noticing a confluence of political and economic conditions he hadn’t encountered before in his fifty-year career. They included large debts and zero or near-zero interest rates in the world’s three major reserve currencies; significant wealth, political, and values divisions within countries; and emerging conflict between a rising world power (China) and the existing one (US). Seeking to explain the cause-effect relationships behind these conditions, he began a study of analogous historical times and discove
