Sentences with phrase «earth history»
"Earth history" refers to the complete story of the planet Earth, from its formation around 4.5 billion years ago until the present day. It includes the development of life, changes in the environment, geological events such as the formation of mountains and the movement of continents, as well as the evolution of humans and other species. Earth history helps us understand how our planet has changed over time and how it has hosted life. Full definition
Cells formed from four basic ingredients... methane, ammonia, hydrogen and water... all of which were in abundance in early earth history.
religion.blogs.cnn.com
At some point in early earth history, the entire globe was covered by water.
And capitalist - technocratic, because the dominant narrative of the Anthropocene has technology as its driver: recent Earth history reduced to a succession of inventions (fire, the combustion engine, the synthesis of plastic, nuclear weaponry).
I've spent much of my career exploring that breadth of geology and doing lots of different things, all with the goal of understanding Earth history.»
The last time in Earth history when the global average surface temperature was as warm as the IPCC projects for 2100 in its mid-range scenarios, there was very little polar ice and sea level would have been roughly 70 meters (over 200 feet) higher than at present.
But as far as they are concerned, «the two largest mass extinctions in Earth history at the K - T and P - T boundaries were both caused by catastrophic collisions with chondritic meteoroids.»
They claim the link between climate change and raising animals for meat is borne out by Earth history.
The game compresses four and a half billion years of Earth history into a single minute, letting players become high - speed time travelers and race through the geologic ages at breakneck speed.
The two most prominent warm phases in Earth history occurred during the Mesozoic and early Cenozoic eras (approximately 250 million to 35 million years ago) and the early and mid-Paleozoic (approximately 500 million to 350 million years ago).
Broad's article deals with the implications of research on climate change over the broad sweep of the Phanerozoic — the past half billion years of Earth history during which fossil animals and plants are found.
In particular, we should make sure of our discoveries on life in various environments on Earth, our knowledge of how our planet and its life have affected each other over Earth history, and our satellite observations of Earth's climate.
John, Ove also came out with the 150 year timeframe at the Brisbane meeting, which to those of us in the audience with a true geological background was just another example of the lack of understanding of a marine biologist for real earth history as you rightly point out.
Mankind Beyond Earth The History, Science, and Future of Human Space Exploration Claude A. Piantadosi Columbia University Press, New York, 2015 Paperback: 297 pp., illus.
The discovery adds to the debate about whether humanity's heavy hand in natural processes warrants the formal declaration of a new epoch of Earth history called the Anthropocene.
Cosmic history doesn't end when earth history begins.
Changing biological and environmental factors during this period of Earth history set the stage for the radiation of animals and the emergence of Phanerozoic ecosystems and diversity.
Use your fingertips to scroll through Earth history for the last 4.5 billion years!
Ranging from rugged uplands, lakes and forests through to gently rolling drumlins, the landscapes of the Geopark represent a complex Earth history dating back as far as 895 million years ago.
With my mind in bondage by the occurrence of the present tense, I attempted versions, sculpting fan fictions of alternative Earth histories.
This is the idea behind the Anthropocene, a new epoch in Earth history proposed by the Nobel Prize - winning atmospheric chemist Paul Crutzen just 15 years ago.
Paul Crutzen, the Nobel laureate in chemistry who, with others, proposed the term in 2000, and Christian Schwägerl, the author of «The Age of Man» (German), described the value of this new framing for current Earth history in January in Yale Environment 360:
March 31, 11:55 p.m. Fresh updates below There's long been a general picture of the climate of the Holocene, the period of Earth history since the last ice age ended around 12,000 years ago.
Geologists study Earth history: Today we are concerned about climate change.
So far - reaching is the impact of modern humans that esteemed palaeoclimatologist Wally Broecker has suggested that we have not entered a new geological epoch, a relatively minor event on the geologic time scale, but a new era — the Anthropozoic — on a par in Earth history with the development of multicellular life.
If you want to understand climate, go out and map several square miles of the crust, log ten miles of core, then figure out a hundred million years of earth history 10Ka at a time.
Extreme events of ocean oxygen depletion leading to anoxia are thought to be prime candidates for explaining some of the large extinction events in Earth history including the largest such event at the end of the Permian 250 million years ago.
What does it mean to have arrived at this point, where human history and Earth history collide?
Five of the six major ice ages occurred when the atmospheric CO2 content was up to 1,000 times higher than at present and for half of Earth history CO2 has been sequestered naturally into algal reefs, coral reefs, sediments, altered rocks, bacteria, plants, soils and oceans.
Ice sheets have waxed and waned throughout Earth history in response to changes in temperature and insolation.
«The Arctic system is moving toward a new state that falls outside the envelope of glacial - interglacial fluctuations that prevailed during recent Earth history.
How we can use fossils and rocks to understand Earth History.
From early Earth history, the continental crust (Earth's thick solid outer skin that we live on) has accumulated mass from the underlying hot mantle.
My initial reaction many years ago to hearing about climate change was one of disbelief, mixed with a strong suspicion that the climate forecasters had neglected to take the lessons of Earth history into account.
Siberian Flood Basalts — MIT: About 252 million years ago, the largest mass extinction and the largest volcanic eruptions in Earth history occurred apparently synchronously.
The contributors offer specialists and nonspecialists alike a comprehensive introduction to the processes of biological mineralization and to the effects of these processes on Earth history.