How nice it must be to respond to others in a caustic shotgun approach, differing with this aspect or that, inferring they are ignorant , spouting facts and using them to beat others over the head, albeit in a reasonably amiable fashion. I believe the network of highways to which you refer to be far different that the Interstate Highway system built in the mid-late 50's. I wonder if their might be a connection between the depression and the I.H.S. as somewhere in that time period, a fellow names Hitler was out and about, creating a super highway system in Germany (The first true freeway?) and surely he was aware of the USA depression. Perhaps he thought of how he could conquer the world through rapid movement of goods and weapons or...maybe he just wanted to show the world how great the modern high speed freeway could be. Heck...how can we ever know?History seems to repeat itself due to the human condition and its inherent short term gratification/planning...or maybe selective memory or...Facts are what you make of them...facts are often learned rather than experienced, and facts are too often regurgitated improperly or off the cuff. Facts are worthless in and of themselves. The creator of Honda motorcycles once said that "knowledge without action is worthless" and I wholeheartedly agree. So I just listen and make up my mind...rather than spend lots of time correcting others.   See 4 other replies

"To combat the great depression an infrastructure of interstates, connecting all the lower 48 United States, was built."
ru0ster , people began planning for a network of highways in 1921, nearly ten years before the Great Depression of the 1930's. The legislation authorizing the Interstate Highway System in the Untied States was passed in 1956, over 15 years after the Great Depression had ended. The Interstate Highway System has no connection with the Depression.History has a habit of repeating itself because human beings too often ignore facts.   See 4 other replies

""An asteriod impact with a large body of water, ejecting liquid water into the lower stratosphere, encircling the planet, coming back down as large frozen balls of ice (basketball sized), creating a very thick layer world wide""--Stephen W-- ^^I have never heard this explanation for an ice age(s) in my life. Global Snow ball hail? Glaciers can naturally grow enormous and almost encapsulate all of North America without invoking alien planetoids, but for a whole earth ice-cap , we need a Asteroid making it snow big-snowballs. Im sure if ice ages had knobs, they would all go to 11 when needed and none have big red asteroid buttons. Although impact debris could trigger a runaway cooling cycle --causing an "iceage", big snowballs falling and covering the earth sounds, well silly.   See 7 other replies

And don't forget the methane!   See 7 other replies

This is true BUT what did the planet look like when that carbon was in the air millions of years ago? It wasn't a planet that humans would find very livable.   See 7 other replies

As a strict environmentalist, I believe all variables contributing our worsening worldwide ecosystem should be given credence if that variable's significance can be established.
At this point, however, there should be some type of 'environmental triage' applied to what variables we place our greatest focus upon. In medical situations, for example, the most severely injured patient always have priority over all others. In this vein, the most significant variables (and their catalysts) must be given the highest priority.
My question to all is, "Do CO2 or CO emissions worldwide perform any significant effect upon any of the greater variables that are destroying the environment?"   See 7 other replies