By SETH BORENSTEIN and JENNIFER AGIESTA, Associated Press

 WASHINGTON (AP) — Few Americans question that smoking causes cancer. But they express bigger doubts as concepts that scientists consider to be truths get further from our own experiences and the present time, an Associated Press-GfK poll found.

 Americans have more skepticism than confidence in global warming, the age of the Earth and evolution and have the most trouble believing a Big Bang created the universe 13.8 billion years ago.

 Rather than quizzing scientific knowledge, the survey asked people to rate their confidence in several statements about science and medicine.

On some, there’s broad acceptance. Just 4 percent doubt that smoking causes cancer, 6 percent question whether mental illness is a medical condition that affects the brain and 8 percent are skeptical there’s a genetic code inside our cells. More — 15 percent — have doubts about the safety and efficacy of childhood vaccines.

About 4 in 10 say they are not too confident or outright disbelieve that the earth is warming, mostly a result of man-made heat-trapping gases, that the Earth is 4.5 billion years old or that life on Earth evolved through a process of natural selection, though most were at least somewhat confident in each of those concepts. But a narrow majority — 51 percent — questions the Big Bang theory.

Those results depress and upset some of America’s top scientists, including several Nobel Prize winners, who vouched for the science in the statements tested, calling them settled scientific facts.

“Science ignorance is pervasive in our society, and these attitudes are reinforced when some of our leaders are openly antagonistic to established facts,” said 2013 Nobel Prize in medicine winner Randy Schekman of the University of California, Berkeley.

The poll highlights “the iron triangle of science, religion and politics,” said Anthony Leiserowitz, director of the Yale Project on Climate Change Communication.

And scientists know they’ve got the shakiest leg in the triangle.

To the public “most often values and beliefs trump science” when they conflict, said Alan Leshner, chief executive of the world’s largest scientific society, the American Association for the Advancement of Science.

Political values were closely tied to views on science in the poll, with Democrats more apt than Republicans to express confidence in evolution, the Big Bang, the age of the Earth and climate change.

Religious values are similarly important.

Confidence in evolution, the Big Bang, the age of the Earth and climate change decline sharply as faith in a supreme being rises, according to the poll. Likewise, those who regularly attend religious services or are evangelical Christians express much greater doubts about scientific concepts they may see as contradictory to their faith.

“When you are putting up facts against faith, facts can’t argue against faith,” said 2012 Nobel Prize winning biochemistry professor Robert Lefkowitz of Duke University. “It makes sense now that science would have made no headway because faith is untestable.”

But evolution, the age of the Earth and the Big Bang are all compatible with God, except to Bible literalists, said Francisco Ayala, a former priest and professor of biology, philosophy and logic at the University of California, Irvine. And Darrel Falk, a biology professor at Point Loma Nazarene University and an evangelical Christian, agreed, adding: “The story of the cosmos and the Big Bang of creation is not inconsistent with the message of Genesis 1, and there is much profound biblical scholarship to demonstrate this.”

Beyond religious belief, views on science may be tied to what we see with our own eyes. The closer an issue is to our bodies and the less complicated, the easier it is for people to believe, said John Staudenmaier, a Jesuit priest and historian of technology at the University of Detroit Mercy.

Marsha Brooks, a 59-year-old nanny who lives in Washington, D.C., said she’s certain smoking causes cancer because she saw her mother, aunts and uncles, all smokers, die of cancer. But when it comes to the universe beginning with a Big Bang or the Earth being about 4.5 billion years old, she has doubts. She explained: “It could be a lack of knowledge. It seems so far” away.

Jorge Delarosa, a 39-year-old architect from Bridgewater, N.J., pointed to a warm 2012 without a winter and said, “I feel the change. There must be a reason.” But when it came to Earth’s beginnings 4.5 billion years ago, he has doubts simply because “I wasn’t there.”

Experience and faith aren’t the only things affecting people’s views on science. Duke University’s Lefkowitz sees “the force of concerted campaigns to discredit scientific fact” as a more striking factor, citing significant interest groups — political, business and religious — campaigning against scientific truths on vaccines, climate change and evolution.

Yale’s Leiserowitz agreed but noted sometimes science wins out even against well-financed and loud opposition, as with smoking.

Widespread belief that smoking causes cancer “has come about because of very public, very focused public health campaigns,” AAAS’s Leshner said. A former acting director of the National Institute of Mental Health, Leshner said he was encouraged by the public’s acceptance that mental illness is a brain disease, something few believed 25 years ago, before just such a campaign.

That gives Leiserowitz hope for a greater public acceptance of climate change, but he fears it may be too late to do anything about it.

The AP-GfK Poll was conducted March 20-24, 2014, using KnowledgePanel, GfK’s probability-based online panel designed to be representative of the U.S. population. It involved online interviews with 1,012 adults and has a margin of sampling error of plus or minus 3.4 percentage points for all respondents.

Respondents were first selected randomly using phone or mail survey methods and were later interviewed online. People selected for KnowledgePanel who didn’t otherwise have access to the Internet were provided with the ability to access the Internet at no cost to them.

___

On Twitter, follow AP Science Writer Seth Borenstein at http://twitter.com/borenbears and AP Director of Polling Jennifer Agiesta at http://www.twitter.com/JennAgiesta .

___

Online:

AP-GfK Poll: http://www.ap-gfkpoll.com

Kayla Mueller’s brother: Swap with Taliban raised IS demands

PRESCOTT, Ariz. (AP) — The brother of an American woman who was killed after spending months as a hostage of Islamic State militants says Kayla Mueller’s situation worsened after the government traded five Taliban commanders for a captive U.S. soldier.

The militants increased their demands after the May swap for Army Sgt. Bowe Bergdahl, Eric Mueller told NBC’s “Today” in an interview that aired Monday.

“That made the whole situation worse because that’s when the demands got greater,” he said. “They got larger. They realized that they had something.”

Mueller’s death was confirmed Feb. 10 by her family and U.S. officials. The Islamic State group claimed she died in a Jordanian airstrike, but U.S. officials have not confirmed that. The Pentagon said it didn’t know how she was killed.

The 26-year-old international aid worker, who grew up in Prescott, Arizona, was captured in August 2013 after leaving a Doctors Without Borders hospital in Aleppo, Syria.

Mueller’s brother and parents spoke to “Today” host Savannah Guthrie. The family has declined repeated requests for an interview with The Associated Press.

Mueller’s father, Carl Mueller, said that the United States’ willingness to swap for Bergdahl but not pay ransom or allow ransom to be paid for his daughter “was pretty hard to take.”

“I actually asked the president that question when we were in the White House,” he said without elaborating.

Mueller’s parents said in the interview that the U.S. government put policy ahead of American lives.

White House spokesman Josh Earnest said Monday that the Mueller family had been put in a difficult position by the U.S. policy against making concessions to terrorists, but he defended it as being in the best interests of the nation.

“The president is confident that his administration did do everything that was possible within the confines of that policy — using our military might, using our intelligence capability, using our diplomatic influence — to try to secure the safe release and return of Kayla Mueller,” Earnest said.

A recent Associated Press-GfK poll found that only 3 in 10 Americans think the United States should pay a ransom to save an American hostage overseas, even if it’s the only way to rescue the hostage. A quarter of Americans say there are circumstances when the United States should directly negotiate with a terrorist group.

The poll of 1,045 adults was conducted online Jan. 29-Feb. 2. The margin of sampling error for all respondents is plus or minus 3.5 percentage points.

The Obama administration has defended the Bergdahl swap. Some U.S. lawmakers were outraged by the exchange of five Taliban commanders held at the Guantanamo Bay prison for the Idaho native who left his post in Afghanistan and was captured and held by the Taliban for five years.

The Joint Chiefs of Staff unanimously supported the exchange, insisting that the United States has a sacred commitment to men and women who serve that it never will leave anyone behind on the battlefield.


AP-GfK Poll: Most back Obama plan to raise investment taxes

WASHINGTON (AP) — The rich aren’t taxed enough and the middle class is taxed too much. As for your taxes, you probably think they’re too high as well.

Those are the results of an Associated Press-GfK poll that found that most people in the United States support President Barack Obama’s proposal to raise investment taxes on high-income families.

The findings echo the populist messages of two liberal senators — Elizabeth Warren of Massachusetts and Bernie Sanders of Vermont — being courted by the progressive wing of the Democratic Party to run for president in 2016. The results also add weight to Obama’s new push to raise taxes on the rich and use some of the revenue to lower taxes on the middle class.

Obama calls his approach “middle-class economics.”

It’s not flying with Republicans in Congress, who oppose higher taxes.

But Bob Montgomery of Martinsville, Virginia, said people with higher incomes should pay more.

“I think the more you make the more taxes you should pay,” said Montgomery, who is retired after working 40 years at an auto dealership. “I can’t see where a man makes $50,000 a year pays as much taxes as somebody that makes $300,000 a year.”

According to the poll, 68 percent of those questioned said wealthy households pay too little in federal taxes; only 11 percent said the wealthy pay too much.

Also, 60 percent said middle-class households pay too much in federal taxes, while 7 percent said they paid too little.

Obama laid out a series of tax proposals as part of his 2016 budget released this month. Few are likely to win approval in the Republican-controlled Congress. But if fellow Democrats were to embrace his ideas, they could play a role in the 2016 race.

One proposal would increase capital gains taxes on households making more than $500,000. In the survey, 56 percent favored the proposal, while only 16 percent opposed it.

Democrats, at 71 percent, were the most likely to support raising taxes on capital gains. Among Republicans and independents, 46 percent supported it.

Obama’s other tax plans didn’t fare as well.

About 27 percent said they favored making estates pay capital gains taxes on assets when they are inherited, and 36 percent opposed it.

Just 19 percent said they supported the president’s aborted plan to scale back the tax benefits of popular college savings plans, 529 accounts, named after a section in federal tax law. Obama withdrew the proposal after Republicans and some Democrats in Congress opposed it.

“I think that’s a poor idea,” said Jamie Starr of suburban Atlanta. “Being that I’m a mother of five children, that is a wonderful program.”

“That’s kids trying to make their own away in this world without having student loans,” she said.

Obama’s proposal to levy a new tax on banks was supported by 47 percent of those surveyed. Only 13 percent opposed it, while 36 percent were undecided.

It’s tax season, that time of the year when people are confronted by their obligations to the government. The poll found that 56 percent of us think our own federal taxes are too high, and 4 percent said they pay too little.

If taxes are increased, a slight majority said the additional money should help pay down the national debt. Using the money to cut other taxes or fund government programs were less popular options.

Republicans, in general, are more likely than Democrats to oppose higher taxes, except when it comes to low-income families.

Only 19 percent of respondents said low-income families pay too little in federal taxes, but there was a significant split between the political parties. Just 10 percent of Democrats said low-income families pay too little, while 33 percent of Republicans said they don’t pay enough.

According to the nonpartisan Congressional Budget Office, the poorest 20 percent of households paid less than 1 percent of all federal taxes in 2011, the latest year for data. The top 10 percent paid more than half of all federal taxes.

That’s OK, said Sen. Sanders, an independent from Vermont, because wealthy people have seen their incomes soar while the rest of the country’s wages have been much more flat.

“Most people understand that at a time when the rich are becoming much richer, the middle class is continuing to disappear,” Sanders said. “And people also understand that the very wealthy and large corporations are able to take advantage of huge loopholes, which enable them not to pay their fair share of taxes.”

Obama has been pushing to raise taxes on the rich since his first campaign for president in 2008. He has had some success. In January 2013, Obama persuaded Republicans in Congress to let income tax rates go up for families making more than $450,000 a year. It was part of a deal that made permanent a large package of tax cuts first enacted under Republican President George W. Bush.

Some liberals are looking for a candidate to push for higher taxes on the rich in the 2016 race. Sanders and Democrat Warren would fit the profile, though Warren says she is not running for president and Sanders says he has not made up his mind.

Among Democrats, Hillary Rodham Clinton is seen as the front-runner for the nomination; she has yet to make her candidacy official.

Clinton hasn’t offered specifics on how she would approach taxes as a candidate. But she offered a glimpse of her views following Obama’s State of the Union Address in January, when she tweeted that Obama “pointed way to an economy that works for all. Now we need to step up & deliver for the middle class. #FairShot #FairShare.”

___

The AP-GfK Poll of 1,045 adults was conducted online Jan. 29-Feb. 2, using a sample drawn from GfK’s probability-based KnowledgePanel, which is designed to be representative of the U.S. population. The margin of sampling error for all respondents is plus or minus 3.5 percentage points.

Respondents were first selected randomly using phone or mail survey methods, and later interviewed online. People selected for KnowledgePanel who didn’t otherwise have access to the Internet were provided access at no cost to them.

___

Online:

AP-GfK Poll: http://www.ap-gfkpoll.com

___

Follow Stephen Ohlemacher on Twitter: http://twitter.com/stephenatap