Titres dans Sciences de la Terre

El agua en nuestro planeta. Composición del agua. Procesos en los que interviene. Localización. Densidad del agua: el hielo. El agua y la vida: desiertos, selvas... El agua y el hombre: el ser humano, la industria...El agua, no cabe duda, es el elemento más importante para la vida, además de ser el más abundante en la superficie terrestre. Es un compuesto con características muy especiales. El agua constituye una parte importante de los seres vivos.

Influencia de los cambios de temperatura en los seres vivos. Adaptación de la vida terrestre a los diferentes hábitat del planeta. La Termodinámica estudia el movimiento del calor. Leyes de la Termodinámica: una de las bases más sólidas de la Ciencia. Primera Ley de la Termodinámica. Segunda Ley de la Termodinámica. ¿Por qué se calientan los objetos? ¿Por qué se producen los cambios en el Universo. Origen del Sistema Solar: hace unos 5.000 millones de años.

La atmósfera: Composición, evolución, alteraciones. El smog. Las industrias más contaminantes: Las energéticas. Los compuestos que liberan los aerosoles. Contaminación: Causas naturales. Efectos de la contaminación: Lluvia ácida, los CFC...

Over the past 20 years, paleontologists have made tremendous fossil discoveries, including fossils that mark the growth of whales, manatees, and seals from land mammals and the origins of elephants, horses, and rhinos. Today there exists an amazing diversity of fossil humans, suggesting we walked upright long before we acquired large brains, and new evidence from molecules that enable scientists to decipher the tree of life as never before.

On a snowy morning in January 1910, the Alaska Steamship Company's Farallon struck Black Reef in Cook Inlet. The vessel carried no wireless radio to broadcast an SOS. Thirty-eight men scrambled into lifeboats, to be cast up on the rugged shore where they huddled under make-shift tents constructed from the Farallon's sails. Exposed to a bitter northern winter with meager equipment and clothing, a disturbing awareness sank in-rescuers may arrive too late.

In its 2001 report on global climate, the Intergovernmental Panel on Climate Change of the United Nations prominently featured the "Hockey Stick", a chart showing global temperature data over the past 1,000 years. The Hockey Stick demonstrated that temperature had risen with the increase in industrialization and use of fossil fuels. The inescapable conclusion was that worldwide human activity since the industrial age had raised CO2 levels, trapping greenhouse gases in the atmosphere and warming the planet.

La aparición de los primeros restos de Neandertales supuso una revolución científica y un golpe a los mismos cimientos de los sectores religiosos más dogmáticos. La aparición de los primeros fósiles humanos en el valle de Neander, en 1856, supuso una auténtica revolución, tanto científica como en el resto de disciplinas.

In Zoom, Bob Berman explores how motion shapes every aspect of the universe, literally from the ground up. With an informative and entertaining style and a knack for distilling the wondrous, Berman spans astronomy, geology, biology, meteorology, and the history of science, uncovering how clouds stay aloft, how the earth's rotation curves a home run's flight, and why a mosquito's familiar whine resembles a telephone's dial tone.

We have long fantasized about finding life on planets other than our own. Yet even as we become aware of the vast expanses beyond our solar system, it remains clear that Earth is exceptional. The question is: Why? In Lucky Planet, astrobiologist David Waltham argues that Earth’s climate stability is what makes it uniquely able to support life, and it is nothing short of luck that made such conditions possible. The four-billion-year stretch of good weather that our planet has experienced is statistically so unlikely that chances are slim that we will ever encounter intelligent extraterrestrial others.

When Indonesia's Mount Tambora erupted in 1815, it unleashed the most destructive wave of extreme weather the world has witnessed in thousands of years. The volcano's massive sulfate dust cloud enveloped the Earth, cooling temperatures and disrupting major weather systems for more than three years. Amid devastating storms, drought, and floods, communities worldwide endured famine, disease, and civil unrest on a catastrophic scale.

Thirty thousand years ago our prehistoric ancestors painted perfect images of animals on walls of tortuous caves, most often without any light. How was this possible? Scholars and archaeologists have for centuries pored over these works of art, speculating and hoping to come away with the key to the mystery. David and Lefrre give us a new understanding of an art lost in time, revealing what had until recently remained unexplainable - the oldest enigma in humanity has been solved.

The idea of a missing link between humanity and our animal ancestors predates evolution and popular science and actually has religious roots in the deist concept of the Great Chain of Being. Yet, the metaphor has lodged itself in the contemporary imagination, and new fossil discoveries are often hailed in headlines as revealing the elusive transitional step, the moment when we stopped being "animal" and started being "human". In The Accidental Species, Henry Gee, longtime paleontology editor at Nature, takes aim at this misleading notion.

Coursing through the Atlantic Ocean is a powerful current with a force 300 times that of the mighty Amazon. Ulanski explores the fascinating science and history of this sea highway known as the Gulf Stream, a watery wilderness that stretches from the Caribbean to the North Atlantic. Spanning both distance and time, Ulanski's investigation reveals how the Gulf Stream affects and is affected by every living thing that encounters it--from tiny planktonic organisms to giant bluefin tuna, from ancient mariners to big-game anglers.

Big Bone Lick: The Cradle of American Paleontology recounts the rich history of the fossil site that gave the world the first evidence of the extinction of several mammalian species, including the American mastodon. Big Bone Lick has played many roles: nutrient source, hallowed ground, salt mine, health spa, and a rich trove of wonders. Stanley Hedeen presents a comprehensive narrative of Big Bone Lick from its geological formation forward, explaining why the site attracted animals, regional tribespeople, European explorers and scientists, and eventually American pioneers.

Climate change is today's news, but it isn't a new phenomenon. Centuries-long cycles of heating and cooling are well documented for Europe and the North Atlantic. These variations in climate, including the Medieval Warm Period (MWP), AD 900 to 1300, and the early centuries of the Little Ice Age (LIA), AD 1300 to 1600, had a substantial impact on the cultural history of Europe.

In recent years our world has seen transformations of all kinds: intense climate change accompanied by significant weather extremes; deadly tsunamis caused by submarine earthquakes; unprecedented terrorist attacks; costly wars in Iraq and Afghanistan; a terrible and overlooked conflict in Equatorial Africa costing millions of lives; an economic crisis threatening the stability of the international system.

The lives of millions will be changed after it breaks, and yet so few people understand it, or even realize it runs through their backyard. Dvorak reveals the San Andreas Fault's fascinating history - and its volatile future. It is a prominent geological feature that is almost impossible to see unless you know where to look. Hundreds of thousands of people drive across it every day. The San Andreas Fault is everywhere - and primed for a colossal quake. For decades scientists have warned that such a sudden shifting of the Earth's crust is inevitable.

Why did the line of ancient humans who eventually evolved into us survive when the others were shown the evolutionary door? Chip Walter draws on new scientific discoveries to tell the fascinating tale of how our survival was linked to our ancestors being born more prematurely than others, having uniquely long and rich childhoods, evolving a new kind of mind that made us resourceful and emotionally complex; how our highly social nature increased our odds of survival; and why we became self aware in ways that no other animal seems to be.

The past fifteen thousand years--the entire span of human civilization--have witnessed dramatic sea level changes, which began with rapid global warming at the end of the Ice Age, when sea levels were more than 700 feet below modern levels. Over the next eleven millennia, the oceans climbed in fits and starts. These rapid changes had little effect on those humans who experienced them, partly because there were so few people on earth, and also because they were able to adjust readily to new coastlines.

This is the true story of a Harvard graduate who forsook his studies for two years of the grueling life of an ordinary seaman. This exciting tale was the first to realistically describe the lives of the roughly treated, poorly paid sailors of the merchant marine.