Sentences with phrase «shifting over hundreds of years»

Another might create a map of the world, using software that animates at the click of a mouse to show political boundaries swelling, shrinking, and shifting over hundreds of years.

Not exact matches

But mammoths weathered many other climatic shifts over the hundreds of thousands of years they roamed Earth, Williams notes.

We do not mind discussing journeys of a few centuries but over a hundred thousand years is a true «paradigm shift.»

A new study in the April 22 edition of Science reveals that volcanic activity associated with the plate - tectonic movement of continents may be responsible for climatic shifts from hot to cold over tens and hundreds of millions of years throughout much of Earth's history.

Volkswagen's new Roadmap E underlines a seismic shift that is happening to the auto industry which is rapidly evolving to keep pace with a worldwide erosion of the equity that petrol and diesel powered vehicles have enjoyed for over a hundred years now.

It features some of the most dramatic and rapid climate shifts in Earth's history, as well as tenacious scientists braving the hostile ice and snows of Greenland and Antarctica for years on end to bring home that most precious material: kilometre - long cores of ancient ice, dating back over a hundred thousand years.

a) atmospheric CO2 from human activity is a major bause of observed warming in the 1980's and 1990's, c) that warming is overstated due to a number of factors including solar effects and measurement skew d) the data going back 150 years is of little reliability because it is clustered so heavily in northeast america and western europe rather than being global e) the global climate has been significantly shifting over the last thousand years, over the last ten thousand years, and over the last hundred thousand years; atmospheric CO2 levels did not drive those changes, and some of them were rapid.

These plates shift over hundreds of millions of years, striking different continental configurations along the way.

Models have long suggested that Earth's orbit shifts from circular to elliptical and back again over hundreds of thousands of years, which plays a part in natural climate swings.

Over very long time periods (hundreds of millions of years), a tectonic uplift can significantly alter their major elements, such as the jet stream, and plate tectonics may shift ocean currents.