The late winter weather in Iowa has been exceedingly warm. Consequently, many fruiting and ornamental trees have started to waken much too early and are subject to damage if the temperature drops to normal levels before spring really arrives. Weather all over the US has been temperamental this year. We have been conditioned to ponder whether the weather is affected by global warming. Meteorologists suggest that the weather is still just the weather but also suggest that global conditions are changing.
In other words, our major weather patterns still follow familiar seasonal patterns. What may be new are annual averages of temperatures across regions, stronger storms, and near the polar zones more ice and permafrost melting than in the past.
Global warming changes planetary conditions more rapidly than it shifts weather patterns. In the oceans, three significant global circumstances are apparent: (1) Excess carbon dioxide in the atmosphere is absorbed into the oceans making the water noticeably more acidic – killing coral reefs and shellfish and generally making life difficult for ocean plant life. (2) Melting ice at the poles is altering ocean temperatures to the point that major currents that flow from the tropics toward the poles (e.g. Gulf Stream) are slowing down and further, the sinking cycles which recharge nutrients in the currents as they flow back to the tropics are not as defined as in the past and nutrients behave differently. (3) The change every one hears about is the rising depth of the world’s oceans due to melting icecaps, threatening shorelines by estimates between 9 and 30 feet; current measurements indicate that oceans have risen 3 to 6 inches at an unusually rapid rate.
Most scientists who study the Earth believe no one will alter the impact of global warming. It has been suggested that global warming is on a 2,000 year path that is the Earth’s cycle; humans only have exacerbated the effect. This insight enables some oil-dependent politicians to deny that people cause climate change. In fact, people do – to a damaging degree. People make the next 2,000 years a lot, lot worse than they need be.
The insult added to injury is that H. sapiens is so trashy and disrespectful toward their planet. Elizabeth Kolbert is right: we are the cause of the Sixth Great Extinction. Some thinkers, most notably Stephen Hawking, believe our species will be counted among the extinct.
 Ends with major ice age due to orbit tugs from Jupiter and Saturn.
 Author of best selling The Sixth Extinction, stating that there have been five major extinctions during Earth’s history that wiped out 90 percent of all living species. Most are aware of the fifth extinction caused by a meteorite that killed off the dinosaurs. Humans are causing the sixth.