Résultats pour "Extinction" dans Sciences de la Terre

Approximately 66 million years ago, an asteroid struck the Earth, triggering a chain of events that would end the reign of the dinosaurs and usher in the age of mammals. Despite its colossal scale, this incident was not the only event of its kind—in fact, it wasn’t even the first. Rather, it’s only the most recent mass extinction our planet has witnessed across its 4-billion-year lifespan.

Speaking to experts in fields as diverse as oil production and ecology, and visiting the places that have escaped recent human activity to discover how they have adapted to life without us, Alan Weisman paints an intriguing picture of the future of Earth. Exploring key concerns of our time, this absorbing thought experiment reveals a powerful - and surprising - picture of our planet's future.

As recently as 11,000 years ago - "near time" to geologists - mammoths, mastodons, gomphotheres, ground sloths, giant armadillos, native camels and horses, the dire wolf, and many other large mammals roamed North America. In what has become one of science's greatest riddles, these large animals vanished in North and South America around the time humans arrived at the end of the last great ice age.

In The Last Days of the Dinosaurs, Riley Black walks listeners through what happened in the days, the years, the centuries, and the million years after the impact, tracking the sweeping disruptions that overtook this one spot, and imagining what might have been happening elsewhere on the globe...

In Once and Future Giants, science writer Sharon Levy digs through the evidence surrounding Pleistocene large animal ("megafauna") extinction events worldwide, showing that understanding this history - and our part in it - is crucial for protecting the elephants, polar bears, and other great creatures at risk today. These surviving relatives of the Ice Age beasts now face an intensified replay of that great die-off, as our species usurps the planet's last wild places while driving a warming trend more extreme than any in mammalian history.

If you're a person who wants to know the secrets of humankind, nature, and evolution, then you're about to discover how to increase sensitivity to the problems of our planet right now! If you're serious about increase sensitivity to the problems of our planet and you really want to know the answers to these great life's questions, then you need to get a copy of A World without Humans: Pros & Cons of Our Eventual Extinction right now.

Le podcast Numerama dédié à la sixième extinction de masse. Six épisodes pour mieux comprendre les menaces qui pèsent sur le vivant, mais avec de l'espoir. Cette série audio prend la forme d'un conte de vulgarisation scientifique porté par Marie Treibert de la chaîne "La Boite à Curiosités".Écriture, voix : Marie TreibertProduction : Marcus Dupont-BesnardRéalisation : Mathis GrososMixage son : Jeanne L'HévéderIdentité visuelle : Audrey Godefroy, Claire BraikehRédactrice en chef : Marie Turcan Hébergé par Acast. Visitez acast.com/privacy pour plus d'informations.

The story of our environment may well be the most important story this century. We focus on issues facing people and the planet. Leading environmentalists, organizations, activists, and conservationists discuss meaningful ways to create a better and more sustainable future. Participants include EARTHDAY.ORG, Greenpeace, UNESCO World Heritage Centre, PETA, European Environment Agency, Peter Singer, 350.org, UNESCO Mahatma Gandhi Institute of Education for Peace and Sustainable Development, Citizens’ Climate Lobby, Earth System Governance Project, Forest Stewardship Council, Global Witness, ...

Scientists have long attempted to understand Earth’s past, and in service to that effort, they have divided the world’s history into eons, eras, periods, epochs, and ages. For example, the current eon is called the Phanerozoic Eon, which means “visible life”. This is the eon in which multicellular life has evolved and thrived. Before this, life was microscopic (single cells).