Developer: Kan. caverns could preserve human race

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A reporter walks through a door to the Vivos Shelter and Resort during a tour of the facility in Atchison, Kan., Tuesday, June 18, 2013. (AP Photo/Orlin Wagner)

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Developer: Kan. ... A reporter walks through a door to the Vivos Shelter and Resort during a tour of the facility in Atchison, Kan., Tuesday, June 18, 2013. (AP Photo/Orlin Wagner)
Birth control sh... This April 25,2013 photo provided by SpayFirst shows wild dogs near Valentine, Neb. Veterinarians are going to inject 300 wild female dogs with a birth control vaccine that has worked on white-tailed deer, feral horses, wallabies and ferrets. The two-year study on the vaccine GonaCon will be conducted on two poor, isolated Indian reservations in the Pacific Northwest. The dogs are community-owned and get scraps from people who don't want to see them die, even though the litters keep coming. (AP Photo/SpayFirst/Ruth Steinberger)
Homes evacuated ... A military C-130 drops a load of fire retardant on a wildfire near Pine, Colo., on Wednesday, June 19, 2013. A new wildfire in the foothills southwest of Denver forced the evacuation of dozens of homes Wednesday as hot and windy conditions in much of Colorado and elsewhere in the West made it easy for fires to start and spread. (AP Photo/Ed Andrieski)
Medical care lag... Afghan National Army Col. Shazad Gul speaks to American adviser Lt. Col. Thomas Sutton, of the 101st Airborne Division, on Saturday, May 26, 2013 at the medical clinic at Camp Parsa in Khost Province, Afghanistan. As Afghan forces take over fighting this year, the Afghan National Army is struggling with a shortage of doctors. (AP Photo/Kristin M. Hall)
James Gandolfini... FILE - This May 20, 2013 file photo shows actor James Gandolfini at the Los Angeles premiere of "Nicky Deuce" in Los Angeles. HBO and the managers for Gandolfini say the actor died Wednesday, June 19, 2013, in Italy. He was 51. (Photo by Richard Shotwell/Invision/AP, File)
Youth leagues tr... A young batter takes a swing as a father who's a coach supervises at a youth baseball game in Buffalo Grove, Ill. on Monday June 10, 2013. Earlier in the month, park district officials in the Chicago suburb posted signs asking parents to behave and keep the games in perspective. (AP Photo/Martha Irvine)
Senators closing... In this June 19, 2013, photo, Sen. Ted Cruz, R-Texas, greets supporters after addressing thousands of tea party activists at the U.S. Capitol railing against the Internal Revenue Service, illegal immigration, and the Obama administration, in Washington. After secretive talks, key senators expressed optimism Wednesday night that they were closing in on a bipartisan agreement to toughen the border security requirements in immigration legislation that also offers a path to citizenship to millions living in the country illegally. (AP Photo/J. Scott Applewhite)
Compromise among... People shout out against the Strengthen and Fortify Enforcement Act in the hall outside the House Judiciary Committee hearing on Capitol Hill in Washington, Tuesday, June 18, 2013. The committee in the Republican-led House is preparing to cast its first votes on immigration this year, on a tough enforcement-focused measure that Democrats and immigrant groups are protesting loudly. (AP Photo/Carolyn Kaster)
Former TWA Fligh... FILE - In this Nov. 19, 1997 file photo, FBI agents and New York state police guard the reconstruction of TWA Flight 800 in Calverton, N.Y. Flight 800 exploded and crashed July 17, 1996 while flying from New York to Paris, killing all 230 people aboard. Former investigators on Wednesday, June 19, 2013 called on the National Transportation Safety Board to re-examine the cause, saying new evidence points to the often-discounted theory that a missile strike may have downed the jumbo jet. (AP Photo/Mark Lennihan, File)
Wooden beam coul... In this June 16, 2013 file photo provided by Great Lakes Exploration Group, diver Jim Nowka of Great Lakes Exploration Group inspects a wooden beam extending from the floor of Lake Michigan that experts believe may be part of the Griffin, a ship that sank in 1679. A wooden beam that has long been the focus of the search for a 17th century shipwreck in northern Lake Michigan was not attached to a buried vessel as searchers had suspected, but still may have come from the elusive Griffin or some other ship, archaeologists said Wednesday, June 19, 2013 (AP Photo/Great Lakes Exploration Group, David J. Ruck, File)
Mueller: FBI use... FBI Director Robert Mueller testifies on Capitol Hill in Washington, Wednesday, June 19, 2013, before the Senate Judiciary Committee hearing on national security matters. As Mueller nears the end of his 12 years as head of the law enforcement agency, lawmakers questioned him about the IRS, surveillance activities, and the Boston Marathon bombing. (AP Photo/J. Scott Applewhite)
Obama making pla... President Barack Obama speaks in front of the iconic Brandenburg Gate in Berlin Germany, Wednesday, June 19, 2013. Obama is planning a major push using executive powers to tackle the pollution blamed for global warming in an effort to make good on promises he made at the start of his second term. "We know we have to do more — and we will do more," Obama said in Berlin. (AP Photo/Pablo Martinez Monsivais)
Men's Wearhouse ... FILE - In this Thursday, May 6, 1999 file photo, George Zimmer, second from left, gestures to Andy Dolich prior to a meeting, in Oakland, Calif. Men's Wearhouse Inc. says it has dismissed Zimmer, its founder and executive chairman. In a terse release issued Wednesday, June 19, 2013, the company didn't give a reason for the abrupt firing of Zimmer, who built Men's Wearhouse from one small Texas store using a cigar box as a cash register to one of the nation's largest specialty retailers in men's clothing, with 1,143 locations. (AP Photo/Ben Margot, File)
Russia could sta... President Barack Obama, accompanied by German Chancellor Angela Merkel, waves before throwing his jacket over his shoulder as he arrives to speak at the Brandenburg Gate in Berlin, Wednesday, June 19, 2013. Obama called to reduce the world's nuclear stockpiles, including a proposed one-third reduction in U.S. and Russian arsenals, a senior administration official said. (AP Photo/Evan Vucci)
HPV vaccine cut ... FILE - A child health nurse holds up a vial and box for the HPV vaccine, brand name Gardasil, at a clinic in Kinston, N.C. on Monday March 5, 2012. A vaccine against a cervical cancer virus has cut infections in teen girls by half, according to a study released Wednesday, June 19, 2013. The study confirms research done before the HPV vaccine came on the market in 2006. But this is the first evidence of how well it works now that it is in general use. (AP Photo/Daily Free Press, Charles Buchanan)
Cops: Disabled P... CORRECTS TO CLARIFY CHARGES Susan Gensiak, 59, of Taylor, Pa., is lead by a police officer to arraignment, Wednesday, June 19, 2013 in Scranton, Pa. Gensiak and her two daughters have been charged with third-degree murder, involuntary manslaughter and neglect of care for a dependent person. (AP Photo/Scranton Times & Tribune, Michael J. Mullen) WILKES BARRE TIMES-LEADER OUT; MANDATORY CREDIT
FBI ends Michiga... Investigators stand at the scene in Oakland Township, Mich., Wednesday, June 19, 2013 where officials attempt to restore the field to its natural condition after the FBI stopped the search for Jimmy Hoffa's remains. The FBI had been digging and searching for three days for the remains of Teamsters union president Hoffa who disappeared from a Detroit-area restaurant in 1975. (AP Photo/Carlos Osorio)
IRS draws new cr... FILE - This March 22, 2013 file photo shows the exterior of the Internal Revenue Service building in Washington. The Internal Revenue Service is about to pay $70 million in employee bonuses despite an Obama administration directive to cancel discretionary bonuses because of automatic spending cuts enacted this year, according to a GOP senator. (AP Photo/Susan Walsh, File)
As fires rage, f... FILE - In this Sept. 8, 2009, file photo District Ranger Bill Gamble points out a telltale hole indicating pine beetles have attacked a tree in the Umpqua National Forest in Diamond Lake, Ore. Overwhelmed by a combination of government austerity and the sheer cost of firefighting, key federal agencies are spending less money clearing brush or removing deadwood killed by parasites, that could prevent further wildfires in the future. (AP Photo/Jeff Barnard, File)
Uncertain future... A U.S. Customs and Border Patrol agent and K-9 security dog keep watch at a checkpoint station, on Feb. 22, 2013, in Falfurrias, Texas. Some drug smugglers caught at the highway checkpoint about an hour north of the Texas-Mexico border are losing their drugs, but not facing prosecution because cooperation between local and federal prosecutors has broken down. (AP Photo/Eric Gay)