                                GLOBAL WARMING
For starts, we are still coming out of the last iceage.   The question everyone should be asking is - ( When will the climatic cycle swing the other way? )

There are climatic fluctuations, but nothing catastrophic.

Fluctuations are part of the natural cycles of our planet.

                                   DO NOT WORRY
The climate has been reasonably stable for several
billion years. Human influences to the planetary climate are minimal at most.

What humans do influence however is local climates
such as pollution in and around major cities. Very
unhealthy…

The worst thing we as people are doing to our planet is
over population, and the related consequences.

Since World War II, we have expanded our numbers far
beyond the point our planet can provide good to
moderate lifestyles.

We have built on top of our crop lands, and put farmers
out of business. How smart was that ? ? ?

Plus we have and continue to construct homes out of
the wrong or cheep materials that do not last, and pay
outrageous prices for them.

                             WHEN OIL WAS CHEEP
We build our cities, and the related infrastructures such
as roads, bridges, dams and crucial water works out of
the wrong materials, inferior materials and in such
massive portions that " NOW " we can no longer
maintain them. Basic bad planning and greed by a lot
of people.

                                          SOLUTION
If the population decreases, and levels off, we must
live within our STABLE ENERGY capabilities. Not
glamorous, but necessary if we hope to survive long
enough to evolve into something better.

                                HISTORY OF CHANGE
The Mg/Ca dataset was taken from the fossil record contained in cores drilled on the Chatham Rise, an area of ocean east of New Zealand. It allowed the Cambridge team to map ocean temperature change over time. Once this had been done, they were able to subtract that information from the oxygen isotopic record. "The calculation tells us the difference between what water temperature was doing and what the ice sheets were doing across a 1.5 million year period," Professor Elderfield explained.
The resulting picture shows that ice volume has changed much more dramatically than ocean temperatures in response to changes in orbital geometry. Glacial periods during the 100,000-year cycles have been characterised by a very slow build-up of ice which took thousands of years, the result of ice volume responding to orbital change far more slowly than the ocean temperatures reacted. Ocean temperature change, however, reached a lower limit, probably because the freezing point of sea water put a restriction on how cold the deep ocean could get.
In addition, the record shows that the transition from 41,000-year cycles to 100,000-year cycles, the characteristic changeover of the MPT, was not as gradual as previously thought. In fact, the build-up of larger ice sheets, associated with longer glacials, appears to have begun quite suddenly, around 900,000 years ago. The pattern of Earth's response to orbital forcing changed dramatically during this "900,000 year event," as the paper puts it.

For many full studies ;

http://www.sciencedaily.com/search/index.php?type=news&total=274&keyword=chock+and+climate§ion=all&period=90&sort=relevance&total=274&page=1