Sentences with phrase «ago about ice ages»

in the other case, another friend made disparaging remarks about my cfl's and when i later said, very casually, something to the effect that he doubted the science, he referred to something dixie lee ray said at least fifty years ago about ice ages and climate variations.

Not exact matches

To the surprise of everyone who knew about the strong evidence for the little ice age and the medieval climate optimum, the graph showed a nearly constant temperature from the year 1000 until about 150 years ago, when the temperature began to rise abruptly like the blade of a hockey stick.

Science says that there was an ice age about ten thousand years ago and started melting at about that time.

For example, about 15,000 years ago, we came out of the last Ice Age as amazingly skilled hunters; we had to be to survive its rigors.

The findings suggest that humans were present on the west coast of British Columbia about 13,000 years ago, as it emerged from the most recent ice age.

Liu and his colleagues started their modeling at about 21,000 years ago — the zenith of the last ice age.

This is because almost all earthworms became extinct there during the last ice age, which ended about 12,000 years ago.

Today's red deer, which recolonized Europe after the ice sheet melted about 12,000 years ago, fall into three or four distinct lineages that likely correspond to separate southern regions to which the deer had retreated during the height of the ice age, Stanton says.

«You see a rapid increase in population size from about 18,000 years ago, just as the climate began warming up after the last Ice Age,» says lead author Rebecca Dew.

Even when sea levels were at their lowest, about 22,000 years ago at the height of the last ice age, the islands were likely out of the deer's swimming range.

Scientists used to think that dogs were domesticated toward the end of the Ice Age, about 14,000 years ago (SN Online: 7/22/10).

Like many parts of the world during the most recent ice ages (the last of which ended about 12,000 years ago), Australia had its share of weird giant animals, including a supersized relative of the Komodo dragon, today's largest land lizard.

When the Ice Age ended, about 15,000 years ago, population began to climb again, setting the stage for a major turning point in human evolution.

For instance, we had the little ice age about 300 years ago.

Such work has shown that the southwestern United States became drier about 10,000 years ago, after the last ice age ended.

About 750 years ago, a powerful volcano erupted somewhere on Earth, kicking off a centuries - long cold snap known as the Little Ice Age.

These animals were still present in parts of north - western Europe after the Ice Age, before they finally disappeared about 7,000 years ago.

About 1.2 million years ago, the sedimentation rate accelerated — the same time that Earth's ice ages began to occur more intensely at 100,000 - year intervals rather than in 40,000 - year cycles.

Moreover, a jump in the region's erosion rates about a million years ago coincides with a transition to more powerful ice ages — a sign that climate change can have a larger than expected effect in tearing down mountains.

About 10,000 years ago, after the glaciers of the Ice Age retreated from the Scandinavian landmass, bands of hunters and fishers moved across the Baltic Sea and into the Finnish wilderness.

During the last ice age (which peaked about 21,000 years ago), he suggested, most of the forest became arid grassland.

Gard found similar fossils deeper down in the sediment cores, indicating that the Arctic ice partially cleared at various times from about 128 000 to 71 000 years ago — a period covering the latest interglacial and the early part of the latest ice age.

In the middle of Lake Huron, however, such lanes could have been buried when lake water levels rose rapidly about 7,500 years ago, after the end of the last ice age.

The experiment simulated conditions believed to be the cause of the beveling — the most recent episode of which occurred during the period of deglaciation following the last Ice Age, about 18,000 years ago.

The last ice age, about 80,000 to 12,000 years ago, was a time of diverse climates, said Mann.

By LEIGH DAYTON and MAGGIE McDONALD About 14 000 years ago an ice - age hunter painted three extraordinary bison on the ceiling of a cave.

The Siberian permafrost is melting, but that has been happening since the end of the last ice age about 10,000 years ago.

So I think the Neandertals are beginning certainly by about 400,000 years ago, then they gradually evolve to the final Neandertals, the ones we know best from Europe in the last ice age.

So about 20,000 years ago, the last ice age reaches its peak, even those people, the moderns, can't survive and Britain has to be recolonized [all] over again after the peak of the last ice age, so it is an amazing story.

Unvegetated terminal moraine from Nahanni National Park, NWT, Canada dating to the end of the last ice age (about 13,800 years ago).

Evidence for an ice age about 650 million years ago has long puzzled geologists because the ice appeared to have reached from the poles almost to the equator.

About 13,000 years ago, a sharp, 1300 - year - long cold and dry spell called the Younger Dryas reversed the warming that had followed the last ice age.

This Ice Age migration over a land bridge between Siberia and Alaska is distinct from the arrival of the Inuit and Eskimo, who were latecomers, spreading throughout the Artic beginning about 5,500 years ago.

They found that the last common Equus ancestor lived between 4 and 4.5 million years ago — before the last ice age — making the lineage about twice as old as we thought.

Dormant for thousands of years, it once featured a large glacier on its massive peak at the height of the last ice age about 21,000 years ago.

The new research found that the glacier actually began to re-advance to almost its ice - age size about 15,400 years ago.

Neandertal An extinct species of human with a receding forehead and prominent brow ridges that was widely distributed in ice - age Europe between about 120,000 and 35,000 years ago.

About 120,000 years ago, in the warm period that preceded our most recent ice age, modern type Homo sapiens was probably walking around Africa with dark skin — and sporting a brain that was three times larger than before the first ice age chatters 2.5 million years ago.

The most recent ice age peaked 21,500 years ago, but continued until about 13,000 years ago.

The current ice age began about 4 × 107 years ago, and gained in intensity during the Pleistocene.

While an ice sheet on Antarctica began to grow some 20 million years ago, the current ice age is said to have started about 2.58 million years ago.

Moreover, random interactions within the sun's magnetic field can flip the fluctuations from one cycle length to the other, matching the paleo - temperature record for ice ages on Earth for over the past 5.3 million years, when ice ages occurred occurred roughly every 41,000 years until about a million years ago when they switched to a roughly 100,000 - year cycle.

As the last ice age ended, about 18,000 years ago, the ice caps began to melt and return their water to the oceans and sea level rose.

The current theory is that these underwater caves were formed above sea level a number of ice ages ago when sea levels were about 400 feet lower.

That warming is about 1/5 of the total warming of the globe from the depths of the last Major Ice Age (about 20,000 years ago) to present.

One more point: Isn't it possible that salinity levels, in particular, are different now in the ESAS than they were about 8000 years ago in the HCO, not long after most of the ice age ice sheet melted?

Every so often a fortunate attitude and orbit of the Earth combine to drench the ice sheets in sunshine as at the end of the most recent ice age, about ten thousand years ago.

There was a less severe ice age 300 million years ago, and the current ice age called the Pleistocene, began about 2 million years ago.

[Response: The global temperature change at the peak of the last ice age (about 20,000 years ago) were about 5 to 7 deg C colder than the present.

Not the Holocene — the name earth scientists give to the era that began about 11,000 years ago, when the last glaciers of the last Ice Age made their last retreat — but the Anthropocene, the new era when people's actions alter conditions on Earth.