検索キーワード： 地質学

Four-and-a-half billion years ago, Planet Earth was formed from a vast spinning nebula of cosmic dust, the detritus left over from the birth of the sun. Within the next 100 years, human life on swathes of the Earth's surface will end in a haze of heat, drought, and, again, dust. Dust is a legacy of 20th-century progress and a profound threat to life in the 21st century. And yet dust is something we hardly ever consider--it is so small and so mundane as to be beyond the threshold of thought. Jay Owen's Dust sparks curiosity and corrects that oversight.

World-renowned volcanologist Clive Oppenheimer has worked at the crater's edge in the wildest places on Earth. He's faced down AK47s, learned from tribal elders, and watched red hot rocks shoot into the sky. More people have been into space than have set eyes on the fiery depths of Mount Erebus in Antarctica, where he has measured the Earth's powerful forces. In Mountains of Fire, he paints volcanoes as otherworldly, magical places where our history is laid bare, and shows us just how entangled volcanic activity is with our climate, economy, politics, culture and beliefs.

More than half a billion years ago, our world was completely covered by glaciers, a "Snowball Earth" that persisted for millions of years. Incredibly, this unimaginable cold led to the remarkable diversification of life on earth known as the Cambrian explosion. With a geologist's eye and a knack for storytelling, Graham Shields explores when and how such inhospitable conditions enabled animals to evolve, radiate, and diversify into our earliest ancestors.