Sentences with phrase «times over the millennia»

Those water vapour swings have changed the power of the greenhouse effect many times over the millennia, far more than CO2 is expected to, yet no tipping point has ever been crossed.

But — C14 has increased in the lower atmosphere at various times, due to the earths changing magnetic field, bombardment from outer space, and atom bomb explosions at various times over the millennium.

THE «Great Barrier Reef» is only «great» because it has died off at least 7 known times over the millennia.

Not exact matches

The Christian Church, particularly in Europe, was the center of intellectual life for over a millennium and had a powerful influence over it until recent times.

So began the idea of a millennium, which even yet in Biblical fundamentalism exercises a potent sway over the imagination of many Christians, and upon which the curiosity of the credulous has worked for centuries in an endeavor to predict «times and seasons.»

It was precisely the votes of Catholic, especially Latin American, countries that put the UN vote over the top and made possible the creation of a Jewish State in the Land of Israel for the first time in almost two millennia.

If this sport was only about entertainment, then we'd have won the league 6 or 7 times over the last decade, as our on - field and off - field antics have given the media enough ammo to last the remainder of the millennium.

As the new millennium dawns on a growing worldwide biomedical hegemony over birth, midwives, the daughters of time and tradition, find themselves negotiating their identities, searching for appropriate roles, and seeking new rationales for their continued existence.

Added up over centuries, millennia, and longer periods of time, natural selection — the competition that takes place in nature between variant forms — is powerful enough to forge all the changes that we've seen on the face of the earth.

The Pima endured these conditions for millennia, and geneticists believe that, over time, their bodies evolved a «thrifty genotype» — a set of genes that enabled them to subsist on very few calories by increasing the efficiency of their metabolism and storing as much energy as possible as fat.

We highlight episodes of climate change that have disrupted ecosystems and trophic interactions over time scales ranging from years to millennia by changing species» relative abundances and geographic ranges, causing extinctions, and creating transient and novel communities dominated by generalist species and interactions.

New research using ancient animal depictions tracks the collapse of Egypt's ecological networks one extinction at a time, offering a glimpse into how climate change and human impacts have altered the structure and stability of ecosystems over millennia.

Usable DNA is challenging to extract because the parasites primarily dwell within the bloodstream and organs, including the spleen and liver, which decompose and break down over time — in this instance, over the course of two millennia.

It requires that the Sun's brightness increased more in the past century than at any time in the past millennium, including over the past 30 years, contrary to the direct space - based observations.

It is obvious throughout our culture that feminine relevance been marginalized, not only presently but over the millennium; we are at a juncture in time Professional BDSM and Fetish services, slave training, extreme femdom, Mistress.

«We stand at the doorstep of the next millennium,» goes the vapid speech that he's expected to deliver time and again to constituents over the weekend.

«The script has been there, and had been optioned a number of times over the years, but it didn't get made until Millennium came on board.

Further Interior Enhancements Are Presented With The Black Carpets Protected With The Alfred Dunhill Embossed Over Mats, The Charcoal Leather Dash That Wraps Around This Snug Cabin, The Light Grey Tailors Suede Roof Lining, The Black Charcoal Leather Trimmed Door Cards, The Leather Bound Centre Arm Rest Which Houses The Cigar Humidor, The Alfred Dunhill Millennium Centre Time Piece, The Alfred Dunhill White Clock Set And Beautifully Finalised With The Brushed Aluminium Internal Inlays.

Containing over 1,400 artifacts from the end of the Ancient Maya Empire that have lain undisturbed for more than a millennium, the ATM cave was once used by priests to conduct human sacrifices at a time of drought, warfare, and civil strife.

It's also been just over half a decade since this millennium moved into adolescence, and in that time there've been some absolutely cracking games of all sorts, shapes, and sizes.

Buck, Louisa, «Young Germans take over De la Cruz Mansion», The Art Newspaper, December 3, 2005, p. 6 (illus) Smith, Roberta, «A Carnival of Art, Money, Surf, and Sand», New York Times, December 3, 2005 «Future Greats», Artreview, December 2005, p. 94 «Guyton / Walker», Uncertain States of America: American Art in the 3rd Millennium, Astrup Fearnley Museet for Moderne Kunst, 2005, pp. 52 - 53 Asthoff, Jens (trans.

«The process of discovery using technology mirrors the recreation of the warriors themselves, all of which were in pieces when they were found, broken by the deterioration of their underground home over two millenniums,» wrote The New York Times in a recent review.

As noted by Jones and Mann (2004)[Jones, P.D., Mann, M.E., Climate Over Past Millennia, Reviews of Geophysics, 42, RG2002, doi: 10.1029 / 2003RG000143, 2004], arguments that such evidence supports anomalous global warmth during this time period is based on faulty logic and / or misinterpretations of the available evidence.

I was somewhat involuntarily thrust into the center of the public debate over climate change at this very time, when the «Hockey Stick» temperature reconstruction I co-authored, depicting the unprecedented nature of modern warming in at least the past millennium, developed into an icon in the debate over human - caused climate change [particularly when it was featured in the Summary for Policy Makers (SPM) of the Third Assessment Report of the IPCC in 2001].

By 1977, there were 124 reasonable - sized vineyards in production — more than at any other time over the previous millennium.

Over all, in considering policy options related to African progress, it's vital to keep in mind that the climate history of peri-Saharan regions includes millenniums - long patterns of mega-drought far more extreme than anything experienced in modern times.

Over that time, scientists have observed changes to the environment that are «unprecedented over decades to millennia.&raOver that time, scientists have observed changes to the environment that are «unprecedented over decades to millennia.&raover decades to millennia.»

The first is climate inertia — on very many levels, from fossil lock - in emissions (decades), ocean - atmospheric temperature inertia (yet more decades), Earth system temperature inertia (centuries to millennia) to ecological climate impact inertia (impacts becoming worse over time under a constant stress)-- all this to illustrate anthropogenic climate change, although already manifesting itself, is still very much an escalating problem for the future.

She continues by emphasizing the too - little appreciated fact that — in the words of climate scientist Susan Solomon — «atmospheric temperatures... are not expected to decrease significantly even if the carbon emissions cease» and that warming is essentially irreversible over a «time scale exceeding the end of the millennium in year 3000.»

From the warmer climates of Roman times when vineyards flourished in England and Wales to the colder conditions that led to crop failure, famine and pandemics in early medieval times, Europe's climate has varied over the past three millennia.

As it happens, the extra heat travels into shallow seas along the continental shelf and, over time, the warming also spreads to the deep seabed, destabilizing methane hydrates and free gas trapped over millennia in the permafrost cap.

As the IPCC observed in its first assessment report in 1990, global climate in recent millennia «has fluctuated over a range of up to 2 degrees Celsius on time scales of centuries or more.»

And it has risen ten to fifteen times as fast over the last century that it has over the previous several centuries and millennia.

The time - since - fire distribution (Johnson & Gutsell 1994) shows mixed fire frequencies over the last two millennia (figure 10), corresponding to five fire periods.

According to charcoal found at the surface or beneath the organic topsoil, 90 % of the surface of all the study sites burned at least one time recently or over the last millennia.

It could be a long time before agreement is reached — there aren't many areas of mathematics where the foundations and philosophical interpretation of the subject matter are still being argued over after a quarter of a millennium!

Were the hypothesis that warming will increase at least 1C / decade averaged over a millennium at 95 % confidence, nineteen times in twenty, given the noise in the signal, all other things being equal, we'd first need 17 years at least to get some kinda sketchy data, and then could begin calculating from the set of subsequent running or independent 17 year spans (a different calculation for each, depending on the PDF) the probability that a -20 C decade would be consistent with a +1 C / decade hypothesis.

'' There have been far worse droughts over the last 1,000 years»... A «in - situ» bio-forest w / understory / fauna that has evolved over many, many millennia, so that it has developed «mechanisms to tolerate drought / flood / fire will not only survive, along with the indigenous inhabitants, but will, in truth, thrive with taking the opportunity to distribute seed or propagation at such times....

But over the last century, during which the IPCC claims the world experienced more rapid warming than any time in the past two millennia, the world did not experience significantly greater trends in any of these extreme weather events.

Cold temperatures prevent the complete breakdown of dead biomass in the boreal, so that carbon is accumulated over time, sometimes even millennia.

All of these are varying over time scales ranging from milliseconds to millennia, and at spatial scales from the microscopic to planet - wide.

There is medium confidence that at least partial deglaciation of the Greenland ice sheet, and possibly the West Antarctic ice sheet, would occur over a period of time ranging from centuries to millennia for a global average temperature increase of 1 - 4 °C (relative to 1990 - 2000), causing a contribution to sea - level rise of 4 - 6 m or more.

Here, we argue that the twentieth and twenty - first centuries, a period during which the overwhelming majority of human - caused carbon emissions are likely to occur, need to be placed into a long - term context that includes the past 20 millennia, when the last Ice Age ended and human civilization developed, and the next ten millennia, over which time the projected impacts of anthropogenic climate change will grow and persist.

A groundbreaking study from the University of Bern has for the first time shed light on Earth's temperature patterns over the past two millennia.

The MD99 - 2275 core offshore Iceland is a very high - resolution ocean sediment core, results of which over the past millennium have been discussed here from time to time.

The doubters also seem unable to accept that the «Hockey Stick» graphs, which show that post-industrial global warming is unprecedented over the past two millennia, have been independently replicated several times.

The Neolithic Subpluvial began during the 7th millennium BC and was strong for about 2,000 years; it waned over time and ended after the 5.9 kiloyear event (3900 BCE).

Over the millennia, the caterpillar has evolved an instinctual sensitivity to the critical weather cues that triggered the safest time to emerge from their subsurface retreat.

Previous hemispheric - scale, temperature reconstructions over the past millennium, with one notable exception (Mann et al., 2009), have focused on reconstructing tem - peratures in the time domain only, an understandable consequence resulting from few 20 and sparsely distributed high - resolution proxies that can be calibrated directly against instrumental observations.

TH: You spend a good deal of time making a case for how things have improved over the millennia.