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Here's what you should know about climate change

Posted at 12:20 PM, Apr 22, 2016
and last updated 2016-04-22 15:20:22-04

April 22 is the one day of the year we intentionally try to be environmentally conscious. But beyond conserving electricity and planting trees, climate change continues to be an earthly issue. 

Here are six things you should know about climate change, via PolitiFact: 

1. The vast majority of experts say humans are contributing to climate change.

Most scientists agree that climate change is real and humans are causing it. The figure that’s widely cited is 97 percent of climate scientists, and it appears in at leastthree peer-reviewed surveysPlenty of other studies report overwhelming majorities of experts (in the 90 percent range) and at least 18 scientific associations agree.

2.  Climate change has national security implications.

In recent years, the Obama administrationthe United Nations Security Council, and many foreign policy and military defense experts have all named climate change as a national security risk. The Pentagon calls it a "threat multiplier," meaning it can lead to food and water insecurity, increased poverty and disease, mass migration and instability.

That’s what happened in Syria, according to a credible 2015 study. The cascading effects of climate change — drought, famine, disease, displacement — contributed to the Syrian conflict in 2011 and bred the conditions for terrorism and the Islamic State to operate.

3. But that doesn’t mean the government is prioritizing climate change over other security concerns.

Those who reject the mainstream climate science often criticize the government for pushing a green agenda while ignoring terrorism. Many of these claims are inaccurate.

The Obama administration is not, for example, sparing ISIS oil fields from bombing because of "concern about global warming," as Ted Cruz claimed. The U.S. military has been striking the terrorist group’s oil assets in a limited fashion, but if climate change were the top concern, it actually would make more sense to ramp up the bombing to stop oil production.

Nor is Obama funding the fight against climate change in lieu of violent extremism, as Wisconsin Rep. Sean Duffy said. The Department of Homeland Security did budget $16 million for climate change in 2016, but multiple government agencies are spending millions more for countering extremists.

4. Nor has concern for climate change altered behaviors, opinions or the energy market that much.

Despite the attention on climate change, Americans are still driving gas guzzlers while alternative energy sources lag behind oil and coal.

SUV sales reached their highest ever market share in 2015 and carpooling is down nearly 20 percent since from 1980. Meanwhile, 56 to 60 percent of the public has consistently supported the Keystone XL pipeline that opponents say will increase greenhouse gas emissions and increase the risk of water population.

The oil and gas industry continues to employ 10 times more people as the solar industry, and coal is still the most common energy source for generating electricity.

5. Climate change leads to temperatures at historic levels, and that leads to fatalities.

With a combined global land and ocean average temperature of 58.22 degrees Fahrenheit, the first 11 months of 2014 were the warmest on record. Then 2015 overtook it, with an average global temperature of 58.62 degrees. And the first three months of 2016 have already surpassed marks set in 2015.

According to the World Health Organization, as many as 250,000 people will die every year from heat exposure from 2030 to 2050, with the greatest fatality rates in the world’s poorest countries.  

6. With all this happening, some Republicans are warming up to the idea of addressing climate change (but not the GOP frontrunner).

In 2014, PolitiFact rated a claim that "virtually no Republican" in Washington accepted climate change science Mostly True. At that time, very few members of Congress were on record as accepting climate change.

In 2015 and 2016, however, the GOP’s presidential field seem to be largely on boardwith the notion that that climate change is happening.  Candidates such as John Kasich, Jeb Bush, Chris Christie, Carly Fiorina, Lindsay Graham, Bobby Jindal, Jim Gilmore, and George Pataki all agreed that it’s man-made. And they all called for some degree of action to combat it, though none of them except Jindal outlined specific proposals. (Democrat Hillary Clinton has an in-depth proposal, as doesBernie Sanders.)

Marco Rubio and Rand Paul said it’s real but humans aren’t to blame, while Donald Trump, Ted Cruz, Mike Huckabee and Rick Santorum flat-out deny that the climate is changing.

While Cruz prefers the term "pseudoscientific theory," Trump repeatedly calls climate change "a hoax" — a claim that’s worthy of a Pants on Fire.