Leo, for hundreds of thousands of years the level of CO2 have been between around 280 to 300 parts per million, it is now up to 405 parts per million. The origin of carbon dioxide can be measured through its isotopes.
If you disagree Leo, tell NOAA.

By your reasoning Leo, if somebody gets bitten by a deadly snake, there is no problem really, the volume of poison is so small when compared to a persons body. In the sameway bacterial infections are of no concern as the volume of bacteria in a persons body is so incredibly small.
You might write to Alaskan newspapers Leo to tell them that their roads are not really subsiding due to permafrost melt in some areas; and the foundations of homes are becoming unstable for the same reason in some places.

You might also set Americans right in relation to a Report involving 300 scientists and experts that has been released yesterday.
Quote: "Devastating droughts in the Southwest, ruinous floods in New York City, killer wildfires in Colorado, intense heat waves in the Plains: These are the some of the disasters today that are being exacerbated by global warming, and will continue to worsen in the decades to come, according to a massive federal climate report released today at the White House in Washington."
It has been stated that there have already been billions of dollars in costs created through climate change.

http://www.usatoday.com/story/weather/2014/05/06/national-climate-assessment/8736743/

http://thinkprogress.org/climate/2014/05/06/3434333/climate-report-authors/

The problem Leo is that the scientists are telling us that they are better than 95% certain that the climate is sick due to excessive amounts of CO2 in the atmosphere, and that we should not allow it to increase much more, or the consequences will be dire. For what ever reason you are choosing to ignore that advice.

If we are not prepared to accept scientific advice, we may as well give up on education and knowledge right now, and just employ soothsayers and witch doctors.

Warmy says the scientists are saying they're 95% certain. Ha ha ha.

Read the 2010 IAC report which said the IPCC's use of certainties was misleading and just plain wrong:

http://reviewipcc.interacademycouncil.net/report/Climate%20Change%20Assessments,%20Review%20of%20the%20Processes%20&%20Procedures%20of%20the%20IPCC.pdf

The IPCC was told to revise its use of certainties and has not done so. What a joke. Warmy and his discredited certainties and ant is living with the Inuit.

Warmair,

I suggest it is you that doesn't understand. It seems you don't understand what information is relevant to rational decision making. Climate science is just one input to rational decisions analysis. You need to understand all of it. The people who are being skeptical and cautious want the policy relevant information, not the irrelevant information that the CAGW ideologues continually preach. To me, most of what they preach is irrelevant and I just switch off. We've been hearing the same mantra for over 20 years. But we can't get the answers to the key relevant questions. Would you like to make an attempt to answer them

cohenite, I do write about the Inuit as they are experiencing the impact of climate change. A 829 page document has been released earlier this week in relation to climate change in all regions of the USA. Much of the information is about what has already occurred due to climate change.
In relation to Alaska, key matters are :
Quote: “1. Arctic summer sea ice is receding faster than previously projected and is expected to virtually
disappear before mid-century. This is altering marine ecosystems and leading to greater ship
access, offshore development opportunity, and increased community vulnerability to
coastal erosion.
2. Most glaciers in Alaska and British Columbia are shrinking substantially. This trend is expected
to continue and has implications for hydropower production, ocean circulation patterns,
fisheries, and global sea level rise.
3. Permafrost temperatures in Alaska are rising, a thawing trend that is expected to continue,
causing multiple vulnerabilities through drier landscapes, more wildfire, altered wildlife habitat,
increased cost of maintaining infrastructure, and the release of heat-trapping gases that increase
climate warming.
4. Current and projected increases in Alaska’s ocean temperatures and changes in ocean chemistry
are expected to alter the distribution and productivity of Alaska’s marine fisheries, which lead
the U.S. in commercial value.
5. The cumulative effects of climate change in Alaska strongly affect Native communities, which are
highly vulnerable to these rapid changes but have a deep cultural history of adapting to change.”
The Report expands on the key matters identified.
The Report titled: Climate Change Impacts in the United States, …it uses literally hundreds of references, in relation to Alaska there are 136 references alone.
continued

These are points made in the overview:

Quote
"1. Global climate is changing and this is apparent across the United States in a wide range of observations. The global warming of the past 50 years is primarily due to human activities, predominantly the burning of fossil fuels.

2. Some extreme weather and climate events have increased in recent decades,
and new and stronger evidence confirms that some of these increases are related
to human activities.

3. Human-induced climate change is projected to continue, and it will accelerate significantly if global emissions of heat-trapping gases continue to increase.

4. Impacts related to climate change are already evident in many sectors and are expected to become increasingly disruptive across the nation throughout this century and beyond.

5. Climate change threatens human health and well-being in many ways, including through more extreme weather events and wildfire, decreased air quality, and diseases transmitted by insects, food, and water.

6. Infrastructure is being damaged by sea level rise, heavy downpours, and extreme heat; damages are projected to increase with continued climate change.

7. Water quality and water supply reliability are jeopardized by climate change in a variety of ways that affect ecosystems and livelihoods.

8. Climate disruptions to agriculture have been increasing and are projected to become more severe over this century.

9. Climate change poses particular threats to Indigenous Peoples’ health, well-being, and ways of life.

10. Ecosystems and the benefits they provide to society are being affected by climate change. The capacity of ecosystems to buffer the impacts of extreme events like fires, floods, and severe storms is being overwhelmed.

11. Ocean waters are becoming warmer and more acidic, broadly affecting ocean circulation, chemistry, ecosystems, and marine life."

continued