Sentences with phrase «planet over millions of years»

Not exact matches

Earth itself would not support most of the life on this planet... enter the cytoplasm, which over many million years, slowly changed the atmosphere into one that was oxygen rich.

TV and radio preachers trumpet the details of prophecy belief over hundreds of stations and cable networks Hal Lindsey's The Late Great Planet Earth sold 9 million copies within eight years of its publication in 1970.

A new study chronicles how central Asia dried out over the last 23 million years into one of the most arid regions on the planet.

A recently discovered solitary ice volcano on the dwarf planet Ceres may have some hidden older siblings, say scientists who have tested a likely way such mountains of icy rock — called cryovolcanoes — might disappear over millions of years.

Over millions of years, this «positive mass anomaly» caused the entire planet to tilt askew into its present alignment with Charon, similar to how a Frisbee with coins taped to one edge will tumble over instead of smoothly spinnOver millions of years, this «positive mass anomaly» caused the entire planet to tilt askew into its present alignment with Charon, similar to how a Frisbee with coins taped to one edge will tumble over instead of smoothly spinnover instead of smoothly spinning.

«But fundamentally, life has evolved over millions of years with half the time dark and half the time light, and we have now enveloped our planet in a luminous fog of light.

Dinosaurs stomped all over the planet for millions of years.

Over millions of years, these planets become shrouded by orbiting debris generated from the collision of comets, asteroids, and other objects.

In two papers in The Astrophysical Journal Letters, the scientists develop models showing that the stellar wind — the constant outpouring of charged particles that sweep out into space — could severely deplete the atmosphere of such planets over hundreds of millions of years, rendering them unable to host surface - based life as we know it.

In these disks, dust is coalescing and tiny chunks of rock are colliding to become larger masses of matter and, over the course of millions of years, planets.

But this past year Guillermo Rougier, a paleontologist at the American Museum of Natural History, described turtle fossils from Argentina (including the one shown here) that were also 210 million years old — indicating that turtles had already spread over the planet by then.

Currents of hot rock churning inside our planet have tended to pull all the continents together and then cast them apart again over hundreds of millions of years.

Over the past 130 years, astronomers have witnessed five similar events on the ringed planet, but the 2011 storm was the first seen through the lens of a satellite: NASA's Cassini probe, orbiting 1.2 million miles away.

Terrestrial planet formation models indicate Earth went through a sequence of major growth phases: accretion of planetesimals and planetary embryos over many tens of millions of years; a giant impact that led to the formation of our Moon; and then the late bombardment, when giant asteroids, dwarfing the one that presumably killed the dinosaurs, periodically hit ancient Earth.

Over the course of about 100 million years, most of the material in that nebulous cloud accreted into the existing eight planets — four rocky (including Earth) and four gaseous.

Over a simulated interval of 200 million years, the inner planet slowly migrated even farther inward to become a «warm Jupiter» orbiting its parent star at about the same distance Mercury does in our solar system, the researchers report online today in Science.

This idea helps explain how we started out as a small, apelike, herbivorous species 6 million years ago in tropical Africa, and after a history of origin and extinction of species, what's left today is us: a single species all over the planet with an astonishing array of abilities to adjust.

The experiments indicate that the planet's interior cooled dramatically, over 240 degrees Celsius between 4.2 and 3.7 billion years ago — a geologically short span of 500 million years.

Sage also knew that dust swirling that near the star would absorb so much heat over those millions of years that the dust would vaporize into the vacuum of space, so no planet would form, especially a Jupiter - size planet.15

Our planet teems with microorganisms such as bacteria, archaea, viruses, fungi and algae that have evolved with their hosts over millions of years.

Under the most accepted scenario, planets form over tens of millions of years from the slow accretion of dust, rocks, and gas.

If such enzymes didn't exist, then the planet would be ankle - deep in the undegraded lysosomal wastes left over from the cells of 600 million years of animal life on this planet.

Over millions of years, those clumps grow into planets.

Processes that have historically altered the face of the planet, like cycles in the Earth's orbit around the Sun or shifts in continental tectonic plates, occur over tens of thousands to millions of years.

Over the course of millions of years, the gravitational weight of this dense ocean could have been enough to manipulate the rotation of the planet, and orientate Sputnik Planitia to face Charon.

«It is surprising, but Earth's atmosphere is about 50 trillion metric tons in mass, and so over long enough timescales — hundreds, thousands, even millions of years — all of that mass, and its drag across the surface of the planet, can have an effect,» said study author Caleb Scharf, director of astrobiology at Columbia University in New York.

The space physicists noted that the stellar wind that blows from stars could deplete the atmosphere of such planets over hundreds of millions of years, eliminating liquid water that is vital for life as we know it.

Astronomers believe that planets form like snowballs over millions of years, as small dust grains clump together to form larger bodies.

We function in perfect harmony with the movements of the planet; even our hormone production is coordinated with the rising and setting of the sun, in a complex system that has evolved over millions of years.

The set - up is clever: What if the asteroid that hit our planet 65 million years ago and led to the extinction of the dinosaurs whizzed over their heads and missed?

It's a problem that's growing exponentially world - wide with 50 million tonnes of e-waste generated last year — that's over 7 kg for every person on the planet.

Millions of people from all over the world visit Paris every year to experience the city's atmosphere, fashion, art and high caliber museums which are unlike anywhere else on the planet.

Synergy II sails over one of the seven natural wonders of our planet — the Great Barrier Reef — which has been created over millions of years with pristine waters teeming with marine life.

Children the world over are taught that millions of years ago a meteor hit the planet resulting in the extinction of the dinosaurs.

Hollow is a miniature forest of all the world's forests, including over 10,000 unique tree species spanning millions of years telling the history of the planet through the immensity of tree specimens in microcosm.

However, it's natural for living organisms to trash the planet as they divide and consume — just look at all of the organisms that went extinct over 2 million years ago when selfish photosynthetic bacteria began spewing oxygen into the atmosphere and eradicating countless species of anaerobic bacteria.

If the planet's climate were changing solely because that's what planets do, evolve through different climatic periods of warming and cooling over millions of years, adverse consequences like the loss of coral reefs and the potential for disappearing Polar Bears would still be undeniably sad, but at least a little easier to swallow.

Sharks are one of the oldest species on the planet, having honed their sleek, aquatic - killer image only over millions of years of evolution — and as if that alone wasn't enough to strike a bit of fear in us would - be oceangoers, it turns out sharks getting even more specialized.

For our planet's wildlife, creatures which evolved over millions of car - free years, these mechanical monsters must seem like a puzzling new arrival to their local habitats — fast - moving threats which appear to be multiplying at an alarming rate.

unfortunately, malthus was all too right, and we are likely in a period of severe population overshoot, the result of our over-reliance on the planet's most concentrated efficient source of cheap energy, nurtured over 100 million years — and wasted in little more than a century.

Given evolution over the past 500 million years when virtually all modern emerged and radiated largely occurred while the planet had no polar ice caps and atmospheric CO2 up to ten times current level, and the planet was green from pole to pole, and life did so well it was able to sequester huge amounts of energy in fossil fuel beds.

First of all, if one examines the complete geological record of global temperature variation on planet Earth (as best as we can reconstruct it) not just over the last 200 years but over the last 25 million years, over the last billion years — one learns that there is absolutely nothing remarkable about today's temperatures!

In fact, when CO2 levels were over ten times higher than they are now, about 450 million years ago, the planet was in the depths of the absolute coldest period in the last half billion years.

Our planet has spent far more time in periods of large scale glaciation then is has in interglacial periods like the current one over the past million years or so.

(11/15/07) «Ban the Bulb: Worldwide Shift from Incandescents to Compact Fluorescents Could Close 270 Coal - Fired Power Plants» (5/9/07) «Massive Diversion of U.S. Grain to Fuel Cars is Raising World Food Prices» (3/21/07) «Distillery Demand for Grain to Fuel Cars Vastly Understated: World May Be Facing Highest Grain Prices in History» (1/4/07) «Santa Claus is Chinese OR Why China is Rising and the United States is Declining» (12/14/06) «Exploding U.S. Grain Demand for Automotive Fuel Threatens World Food Security and Political Stability» (11/3/06) «The Earth is Shrinking: Advancing Deserts and Rising Seas Squeezing Civilization» (11/15/06) «U.S. Population Reaches 300 Million, Heading for 400 Million: No Cause for Celebration» (10/4/06) «Supermarkets and Service Stations Now Competing for Grain» (7/13/06) «Let's Raise Gas Taxes and Lower Income Taxes» (5/12/06) «Wind Energy Demand Booming: Cost Dropping Below Conventional Sources Marks Key Milestone in U.S. Shift to Renewable Energy» (3/22/06) «Learning From China: Why the Western Economic Model Will not Work for the World» (3/9/05) «China Replacing the United States and World's Leading Consumer» (2/16/05)» Foreign Policy Damaging U.S. Economy» (10/27/04) «A Short Path to Oil Independence» (10/13/04) «World Food Security Deteriorating: Food Crunch In 2005 Now Likely» (05/05/04) «World Food Prices Rising: Decades of Environmental Neglect Shrinking Harvests in Key Countries» (04/28/04) «Saudis Have U.S. Over a Barrel: Shifting Terms of Trade Between Grain and Oil» (4/14/04) «Europe Leading World Into Age of Wind Energy» (4/8/04) «China's Shrinking Grain Harvest: How Its Growing Grain Imports Will Affect World Food Prices» (3/10/04) «U.S. Leading World Away From Cigarettes» (2/18/04) «Troubling New Flows of Environmental Refugees» (1/28/04) «Wakeup Call on the Food Front» (12/16/03) «Coal: U.S. Promotes While Canada and Europe Move Beyond» (12/3/03) «World Facing Fourth Consecutive Grain Harvest Shortfall» (9/17/03) «Record Temperatures Shrinking World Grain Harvest» (8/27/03) «China Losing War with Advancing Deserts» (8/4/03) «Wind Power Set to Become World's Leading Energy Source» (6/25/03) «World Creating Food Bubble Economy Based on Unsustainable Use of Water» (3/13/03) «Global Temperature Near Record for 2002: Takes Toll in Deadly Heat Waves, Withered Harvests, & Melting Ice» (12/11/02) «Rising Temperatures & Falling Water Tables Raising Food Prices» (8/21/02) «Water Deficits Growing in Many Countries» (8/6/02) «World Turning to Bicycle for Mobility and Exercise» (7/17/02) «New York: Garbage Capital of the World» (4/17/02) «Earth's Ice Melting Faster Than Projected» (3/12/02) «World's Rangelands Deteriorating Under Mounting Pressure» (2/5/02) «World Wind Generating Capacity Jumps 31 Percent in 2001» (1/8/02) «This Year May be Second Warmest on Record» (12/18/01) «World Grain Harvest Falling Short by 54 Million Tons: Water Shortages Contributing to Shortfall» (11/21/01) «Rising Sea Level Forcing Evacuation of Island Country» (11/15/01) «Worsening Water Shortages Threaten China's Food Security» (10/4/01) «Wind Power: The Missing Link in the Bush Energy Plan» (5/31/01) «Dust Bowl Threatening China's Future» (5/23/01) «Paving the Planet: Cars and Crops Competing for Land» (2/14/01) «Obesity Epidemic Threatens Health in Exercise - Deprived Societies» (12/19/00) «HIV Epidemic Restructuring Africa's Population» (10/31/00) «Fish Farming May Overtake Cattle Ranching As a Food Source» (10/3/00) «OPEC Has World Over a Barrel Again» (9/8/00) «Climate Change Has World Skating on Thin Ice» (8/29/00) «The Rise and Fall of the Global Climate Coalition» (7/25/00) «HIV Epidemic Undermining sub-Saharan Africa» (7/18/00) «Population Growth and Hydrological Poverty» (6/21/00) «U.S. Farmers Double Cropping Corn And Wind Energy» (6/7/00) «World Kicking the Cigarette Habit» (5/10/00) «Falling Water Tables in China» (5/2/00) Top of page

'' «In fact, when carbon dioxide levels were over 10 times higher than they are now, about 450 million years ago, the planet was in the depths of the absolute coldest period in the last half - billion years,» Patterson said.»

In the 1970s, scientists showed that that Milankovitch cycles have driven repeated warming and cooling of the planet, and thus the waxing and waning of ice ages over the last few million years.

That lends weight to an old idea that the orbits of the planets, far from being clockwork and constant over millions of years, change slightly, a situation that planetary geologists term «chaotic».

If you want to look at it REALLY, REALLY long term, over the last FIVE MILLION years, for an early period of about 2 MILLION years, the planet was, on average, +1 C HOTTER than it is today.

How do you integrate your concerns with global warming with the fact that the overwhelming majority of the time, over the last three and a half million years, our planet has been subject to horrid ice - age conditions.