The US is 3.5 million sq miles in area, Bangladesh is 56K sq miles in area with nearly half of the population. This is what will happen to these people because of deniers;
How many millions of people in this one corner of the world alone will climate change displace?
"Bangladesh is now widely recognised to be one of the countries most vulnerable to climate change. Natural hazards that come from increased rainfall, rising sea levels, and tropical cyclones are expected to increase as climate changes, each seriously affecting agriculture, water and food security, human health and shelter. It is believed that in the coming decades the rising sea level alone will create more than 20 million climate refugees."
http://en.wikipedia.org/wiki/Bangladesh
"In 1990, the Intergovernmental Panel on Climate Change declared that the greatest single consequence of climate change could be migration,
‘with millions of people displaced by shoreline erosion, coastal flooding and severe drought’."
http://en.wikipedia.org/wiki/Environmental_migrant
Do you think the US won't be affected? You're dreaming.
"We have confidence that the CO2 measurements made at the Mauna Loa Observatory reflect truth about our global atmosphere. The main reasons for that confidence are:
-The Observatory near the summit of Mauna Loa, at an altitude of 3400 m, is well situated to measure air masses that are representative of very large areas.
-All of the measurements are rigorously and very frequently calibrated.
-Ongoing comparisons of independent measurements at the same site allow an estimate of the accuracy, which is generally better than 0.2 ppm."
http://www.esrl.noaa.gov/gmd/ccgg/about/co2_measurements.html
Anyone interested can view the entire process of how the Mauna Loa Observatory records its data by simply taking the time to read this link. I know you won't, and neither will the other deniers because you choose to be willfully ignorant and espouse denier talking points because it's a lot easier than actually learning and they confirm your preconceived bias.
Multiple places throughout the planet have faced meters in sea level rise leading to environmental refugees and displacement. Tens of millions of people forced to leave their land because of sea level rise, considering what we know of turmoil and displacement, what do you foresee happening to people in these types of situations? What would happen to agriculture and livestock? What would happen to national security?
Many other nations, along with the US, are taking leading roles in committing to the issue of climate change. China for instance, the next largest contributor to greenhouse gas emissions has formally agreed to reduce peak emissions by 2030;
"Building on strong progress during the first six years of the Administration, today President Obama announced a new target to cut net greenhouse gas emissions 26-28 percent below 2005 levels by 2025. At the same time, President Xi Jinping of China announced targets to peak CO2 emissions around 2030, with the intention to try to peak early, and to increase the non-fossil fuel share of all energy to around 20 percent by 2030. "
https://www.whitehouse.gov/the-press-office/2014/11/11/fact-sheet-us-china-joint-announcement-climate-change-and-clean-energy-c
You are dismissing the scientific consensus without providing evidence to support your belief in a global conspiracy requiring tens of thousands if not hundreds of thousands of people.
Is it too much to ask to show me something that supports your belief?
I started the sentence admitting the Earth has warmed in the past naturally, then asked how that applies to the current warming trend. I'm assuming the argument behind this talking point being "it warmed in the past, so how do you know the current warming isn't natural, too?", the answer being because the rate of change is significantly faster than what we would expect to see if the change in temperature were caused by natural forces. Natural forces are still, and always, at work behind the scenes, but the current trend in the increase of temperature is unequivocally man made. There is no doubt within the scientific community.