as manuel bojorquez reports, drilling for oil and gas play as role. >> we're having an earthquake.g an earthquake. >> reporter: this is some of the shaking in oklahoma where since 2009 there have been 300 times more earthquakes than in previous decades. >> the house was shaking violently. >> reporter: sandra showed us last month the damage she still has from the largest quake there. could you believe this was an earthquake happening? >> it was hard to because i had never been in anything like that. >> reporter: a portion of oklahoma is now one of 17 regions identified by the u.s. geological survey for human caused earthquake activity possibly triggered by oil and gas production. waste water from fracking operations is typically ingested deep underground and that could reactivate dormant faults. in oklahoma, scientists announce this week they believe the majority of recent earthquakes in some areas were likely triggered by those types of disposal wells. and while mostly minor, the quakes are happening in areas where homes are not designed to earthquake building codes. the scientists

manuel bojorquez has more. >> we're having another earthquake. >> reporter: the shaking always comesock, especially when it comes, of all places, to oklahoma. >> who do you call if you feel an earthquake? >> reporter: the state now outranks california for earthquakes magnitude two or greater. >> the housing was shaking violently. >> reporter: sandra ladra experienced the most violent. could you believe this was an earthquake happening? >> it's hard to imagine because i'd never been anything like this. >> a rock that fell from her fireplace injured her leg and shattered her sense of safety. >> if you don't feel safe in your home, what do you do? >> reporter: since late 2009, the u.s. geological sure fay found oklahoma has had 300 times more earthquakes than in previous decades. the latest study says 300 million-year-old fault lines have been reactivated and are capable of producing a magnitude 6 quake. dan mcnamara is with the u.s. geological survey. >> the reason for the study is to identify regions where most likely able to produce a magnitude six earthquake and how that might affec

here's manuel bojorquez. >> my son seth, signed the. . asking me, dad the governor to veto this bill, and he gave me permission to make that reference. >> no religious freedom is restored by the bill at all. >> reporter: governor hutchinson, just like governor mike pence of indiana, continues to face critics who believe their religious freedom laws open the door to discrimination against gays and lesbians. >> this is a bill that in ordinary times would not be controversial. >> reporter: in arkansas corporate giant walmart urged the governor to reconsider and religious leaders joined protesters. ref rabid robert lowry. >> it is blasphemous, it is an abomination and an affront to the gospel of jesus christ. >> reporter: hecklers greeted the sponsor of the bill at the state capital. >> shame ow! >> reporter: but representative bob ballinger stood strong. people's misconsemgzs that this billed would allow for descrims descrimination, which is not the case. >> reporter: governor hutchinson is now asking for a bill that mirrors the federal law

manuel bojorquez, cbs news, fort hood texas. >> pelley: president obama is about to make history.ll meet tomorrow with-- in panama with the cuban president raul castro, and he's expected to remove cuba from the list of state sponsors ofro terrism. major garrett is traveling with the president in panama c >> reporter: before leaving washington wednesday, president obama spoke by phone with cuban dictator raul castro their second call since mr. obama's historic decision to normalize relations with cuba. ahead of their meeting tomorrow, secretary of state john kerry met with cuba's foreign minister bruno rodriguez thursday night the highest level engagement since 1959. cuba is one of four countries on the state sponsors of terrorism list, landing there in 1982 after supporting terrorist groups in spain and colombia. the president's likely decision to remove cuba would allow it access to u.s. finance and arms sales and could accelerate the opening of embassies in embassies in havana and washington. >> as we move towards the process of normalization, we'll have our differences governme

manuel bojorquez is looking into this. >> reporter: texas is scheduled to execute these four men next month, but only after officials scrambled to find the lethal injection drug pentobarbital. it may be harder now that the american pharmacist association has become the latest group to adopt a policy which discourages pharmacists' participation in executions. joe da silva is with the association's texas chapter. >> we feel that the pharmacists should have the right to decide based on their ethics, their religious positions as to what role they should play in dispensing any medication. >> reporter: pharmacists also became alarmed after ohio, oklahoma, and arizona experimented with new drug combinations made on special order by compounding pharmacies, which led to prolonged and apparently painful executions. >> i think the botched executions have been very problematic. and some of that is because of the shortage of the chemicals that are being used for lethal injection. >> reporter: there is a shortage of the drugs because death penalty opponents have pressured drug makers to stop sellin

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manuel bojorquez with a wine boom. >>> it's time to show you some of the morning headlines.ll no longer be a size or number permitted on a soldiers' arms or legs. >> britain's telegraph says michael bloomberg is an official knight of the british empire. he accepted the award yesterday. bloomberg laughed of rumors he was running for mayor of london. >> president obama paid tribute to bob marley during his visit to jamaica. he stopped at the marley museum. his hit "one love" played on the building sound system. >>> the 79th masters is under way this morning in augusta georgia. many of golf's greatest names have earned the famous green jacket. ten years ago tomorrow tiger woods won his fourth masters with help from an incredible chip shot. this newly released video shows that famous birdie on 16 from an angle we have never seen. this year's tournament began with the opening ceremony featuring three masters' legends. >> good morning, everyone. i'm billy payne, chairman of augusta national golf club. welcome to the 79th playing of the masters. thank you so much for coming. and as

manuel bojorquez is on shaky ground. >> we're having another earthquake. >> >> reporter: this is some of the shaking in oklahoma where since 2009 there have been 300 times more earthquakes than in previous decades. >> the house was shaking violently. >> reporter: sandra ladra showed us last month the damage she still has from the largest quake there. could you believe this was an earthquake happening? >> it was hard to because i had never been in anything like that. >> reporter: a portion of oklahoma is now one of 17 regions identified by the u.s. geological survey for human-caused earthquake activity, possibly triggered by oil and gas production. waste water from fracking operations is typically injected deep underground and that could reactivate dormant falls. in oklahoma, scientists announced this week they believe the majority of recent earthquakes in some areas were likely triggered by those types of disposal wells. and while mostly minor, the quakes are happening in areas where homes are not designed to earthquake building codes. matthew hornbach and brian stump are scientists a

manuel bojorquez was there when the freshman senator from florida made his announcement. >> i believe our very identity as an exceptional nation is at stake and i can make a difference as president. >> reporter: marco rubio launched his campaign from miami's freedom tower the first stop for thousands of cuban exiles during the '60s and '70s. the son of cuban immigrants themselves, rubio vowed to protect the american dreams they sought. >> i live in an exceptional country where the son of a bartender and maid can have the same dreams and the same future as those who come from power and privilege. >> reporter: rubio was elected to the senate in 2010 at just age 39 par of a tea party wave. a foreign policy hawk, he's been sharply critical of president obama's policies on isis iran and especially cuba. but some conservatives have criticized rubio's support of a 2013 comprehensive immigration reform bill that ultimately failed. rubio says he now favors a piecemeal approach to immigration with border security at -- as the top priority. on the come pain trail he will call for an overhaul of

manuel bojorquez reports. >> reporter: there were more than 160 water rescues in louisville after more than six inches of rain fell overnight, stranding cars and flooding homes. >> flooding is going underneath. it's going straight through the building. >> reporter: the same weather systems spawned tornadoes in the plains. this is the destruction in the town of afton, oklahoma. harrison, arkansas, was hit by what people believe was also a tornado. >> so i jumped into the bath tub, heard an awful noise and thought roof went because i heard water coming in. >> reporter: despite the damage, it's been a relatively quiet tornado season with only 40-50 touching down since the beginning of the year. the average is 150. the same large and persistent jet stream that has caused a historic drought in california and a record-breaking winter in the northeast has suppressed severe weather activity in the nation's midsection, but not for long, says greg carbin with the storm prediction center. >> parts of the southern united states will remain at risk through the rest of the month of april and then to

manuel bojorquez shows us the growing hostility. good morning. >> good morning.the operation is needed to keep emerging threats from around the world but there's enough paranoia that they've ordered the texas state guard to keep a close eye on the exercises. >> this is in preparation for the financial collapse and maybe even obama not leaving office. i'm telling you this is so huge. >> reporter: online there is question that he's masking something insidious. >> one thing is for sure. troops will be ready and trained to take over your town when it happens. >> they're prepared to issue martial law and even maybe roundups. this is not a joke. it's the real deal. >> reporter: the army tells cbs news i has nothing do with martial law that many of the exercises will take place in remote areas away from the public, but after this map of the training exercises surfaced which identified texas, utah and southern california as hostile territory, the conspiracy theory took off. >> my friends, this is a declaration of war on united states soil. this is in our backyard. >> eve

manuel bojorquez is in miami where rubio made the announcement.reporter: good morning, more than 1,000 people came to the freedom tower here in downtown miami, a place that has special meaning for cuban-americans like rubio and his family. it's where refugees were processed more than 50 years ago. and rubio tapped that american dream theme as he announced his run. >> i announce my candidacy for ter: rubio told the story of his parents coming to the u.s. in search of the american dream. >> they never made it big, but they were successful. >> reporter: he said many americans doubt that dream is still possible. >> young americans unable to start a career or a business or a family because they owe thousands of dollars in student loans for degrees that did not even lead to jobs. >> reporter: 43-year-old rubio is trying to cast himself as the candidate in touch with the wants and needs of the younger generation. >> this election is not just about what laws are going to pass. this election is a generational choice about what kind of country we will be. >