If you were a hippie in the 60s, you need to know. Its the dawning of the age of aquarius. Yeah, and Something Else thats cool. What . Osteoporosis is preventable. All osteos preventable . Right on if you dig your bones, protect them. All cbs cares theres more extreme weather in the forecast. With arctic air blasting the northeast, rain and snow in the west, and in the midwest, the historic winter flood is rolling on. At least 25 people have been killed there. Theres no peace in olive branch, illinois, where we find David Begnaud tonight. David . Reporter scott, at least half of the town of olive branch, illinois, is underwater there are flooded homes like the one behind me for miles in areas that are known to be vulnerable to major flooding. Theres the breech. Reporter in alexander county, illinois, the flooding is disastrous, and the temperature is near freezing. Its gotten real bad here. Reporter today the u. S. Coast guard flew us over the spot where the 18mile levee failed about 72 hours ago. This is where the levee breeched sending water from the Mississippi River into a flood plain. At least 100 structures are flooded, 14,000 acres of the county are under water, and the water is rising. Reporter this is the home of Brandon Dillow and jennifer korte. They built their levee eight feet high. Tonight theyre dry. They learned a lesson during a flood in 2011. Then the levee was five feet high and water got inside the home. Depressing. It changes your whole life. Reporter many like them have been asked to evacuate but david bighams elderly parents got out, but the others stayed behind to save what was left. You worry about everything you got and everything youre going to lose. Reporter from the air you see the home is surrounded by water on three sides. Bigham has 25,000 sandbags and eight water pumps working to keep the property dry. So far theyre holding. Reporter back near the levee breach, we spotted this herd of deer, victims of the unrelenting flood running for an escape. We noticed tonight the water seems to have dropped about an inch in the last six hours. Thats great news for the bigham family. Friends and family are working around the clock, dead set on saving this house that has been here since 1959. Scott, some of this floodwater could reach memphis by friday. David, thank you very much. Ben tracy is reporting much current known as el nio. Reporter el nio has already hit californias mountains. The latest snowpack survey found five feet of snow in the sierras, a welcome sight after four years of drought. Southern california is now bracing for a series of storms. Josh rubenstein is a meteorologist at kcbs in los angeles. Were looking at about an inch to two inches of rain in the l. A. Basin, and right on its heels, heres that third system thats moving in on wednesday. The rain from that could linger all the way into friday. Reporter el nio is an intense warming of the Pacific Ocean near the equator that changes weather patterns around the world. This is one of the largest on record. In glendora, california, eric erby was stocking up on sandbags. It could happen any time anywhere. It depends on how much. Either way, ill make sure im prepared. Reporter los angeles is designed to prevent flooding, which is why the Los Angeles River is encased in all of this it may look like a pathetic little stream tonight, but, scott, later this week you could have ten to 20 feet of water filling this channel. Ben tracy, thanks. Well, it was a wave of worry that swept world Financial Markets today after stocks in china plunged. The dow was down as much as 467 points, but it recovered, ending with a loss of 276 or 1. 6 . It is the worst start to a year since the great recession. The markets were also rattled by saudi arabia and iran. The two are rivals because the saudis represent the sunni branch of islam and iran is home to the shiite branch. Over the weekend, the saudis executed a shiite cleric. After a furious iranian reaction, countries in the gulf are choosing sides. Heres holly williams. Reporter in iran today, angry protesters denounced saudi muslim cleric nimr alnimr. His death has opened a 1,400 yearold wound, enflaming tensions between sunni and shiite muslims. In the sunniled kingdom of saudi arabia, alnimr dared to demand equality for shiites and was shot and then arrested in 2012. It was in shiitedominated iran that Saudi Arabias Embassy was ransacked and burned on saturday. Around 40 people were later arrested, but iran made its feelings clear by renaming this street in honor of the executed cleric. Saudi arabia and iran are already fighting two deadly proxy wars against each other in syria and yemen, taking sides along religious lines. Now there are fears that al nimrs execution will fuel even east. Shiite muslims also clashed with police in bahrain. They used tear gas and rubber bullets against the protesters. Blaming iran for the escalation, saudi arabia has severed diplomatic ties with tehran. Its ally, bahrain, has followed suit, while the United Arab Emirates has recalled its ambassador. With many countries in the middle east already torn apart by religious differences, these tensions could destabilize the region even more, especially, scott, if saudi arabia and iran try to use those religious divisions to further their own interests. Holly williams reporting for us tonight in istanbul. Holly, thank you. Is man creating earthquakes in oklahoma . And theyve discovered the wreck of el faro, the worst u. S. Maritime disaster in 30 years. The cbs overnight news will be ugh. My sinuses are killing me. Yeah. Just wait til we hit ten thousand feet. Im gonna take Mucinex Sinusmax. Too late, were about to take off. These dissolve fast. Theyre new liquid gels. And youre coming with me. Wait, what . you realize i have gold status . Do i still get the miles . New Mucinex Sinusmax liquid gels. Dissolves fast to unleash max strength medicine. Start the relief. Ditch the misery. Your heart loves omega3s. But theres a difference between the omega3s in fish oil and those in megared krill oil. Unlike fish oil, megared is easily absorbed by your body. Which makes your heart, well, megahappy. Happier still, megared is proven to increase omega3 levels in 30 days. Megared. After a swarm of small earthquakes in oklahoma, the state has ordered oil drillers today to reduce the amount of wastewater they inject into the ground during a process known as fracking. Heres mark strassmann. Reporter oklahoma, not earthquake capital. Who do you call if you feel an earthquake . Reporter until 2008, the state averaged one or two a year. Now its almost three a day. It was a big boom. And everything started shaking. Reporter including you . Including me. Reporter a 4. 5 magnitude earthquake hit crescent, oklahoma, last july. Grocery clerk Lois Gillette hugged a coworker. I thought i was going to fall. There was a lot of stuff fell off the shelves. Reporter oklahoma keeps breaking records for earthquakes with a magnitude of 3. 0 or higher. More than 900 last year alone. But why . Most geologists connect the spike in earthquakes to the states oil and gas industry and its disposal of massive amounts of water into underground caverns. Geologist todd halihan teaches at oklahoma state. Unfortunately there is a side seismicity due to the injection wells, theyre startling when you feel them, and there are now a lot of people experiencing them on a pretty broad scale. Reporter Lois Gillette isnt taking sides. I dont know if its manmade. I dont have any idea. Reporter you would just like it to stop . I want it to stop. Please. Reporter one geologist we talked to said no question something has reactivated fault lines here, fault lines that had been dormant for 300 million and well be right back. Today the National Transportation safety board said that it may press for more evidence in the sinking of the american cargo ship el faro, lost this past october in hurricane joaquin. All 33 crew were killed. Recently on assignment with 60 minutes, we sailed with the ntsbs investigator, tom rothroffy as el faro was discovered 15,000 feet under the atlantic. This is where el faro came to rest, upright, hull largely intact, her name mangled on the stern. Her depth markings reported that this, the bow, had sunk 15 feet her autopsy revealed a body that had been savagely beaten, steel crushed, equipment collapsed. There was no sign of the 33 crew members. Equipment and cargo litter the seabed. Thats a microwave oven, and on the right, thats a printer. Here is the top of a car with a sunroof, part of the cargo. At the top of that white line there is the most surprising part of our video surveys. Theres nothing above there. What should be there . There should be two decks above that. The lower navigation bridge deck and the bridge deck. The two top decks had sheered off, including the bridge, where captain davidson would have been fighting the storm. They were nowhere near the ship. Also missing, the voyage data recorder, like a socalled black the safety board says it may search again for that data recorder, which would have captured conversations on the bridge. Our final story coming up next. Woman what does it feel like when a woman is having a heart attack . Chest pain, like theres a ton of weight on your chest. Severe shortness of breath. Unexplained nausea. Cold sweats. Theres an unusual tiredness and fatigue. Theres unfamiliar dizziness or lightheadedness. Unusual pain in your back, neck, jaw, one or both arms, even your upper stomach, are signs youre having a heart attack. Dont make excuses. Make the call to 911 immediately. Learn more at womenshealth. Gov heartattack. While i was on a combat patrol in baqubah, iraq, a rocketpropelled grenade took my arm off at the shoulder. I was discharged from the army, and ive been working with warriors, you dont have to be severely wounded to be with the Wounded Warrior project. We do have a lot of guys that have posttraumatic stress disorder. Being able to share your story, i guess it kind of helps you wrap your mind around what did happen over there. My name is norbie, and yes, i do suffer from posttraumatic stress disorder, the government says we need 75 minutes of vigorous exercise a week. Dr. Jon lapook has one way to get it. Reporter this is considered vigorous . Right. Reporter Carol Ewing Garber teaches the science of exercise at columbias teachers college. How many calories a minute do you burn procrastinating . Because im really good at that. Many at all. Reporter for those who get tired just thinking about strenuous exercise without rest, theres a fitness approach called high intensity interval training or h. I. T. Short bursts of high intensity exertion, say a minute or two of running as fast as you can, followed by a short period of recovery, maybe a slow jog for a few minutes. So ill row for 100 meters. So thats a short row. It will be high intensity. Im going to try to bring the power up. Reporter h. I. T. Is the mantra at orange theory fitness where eddie diaz is a coach. This will be a Recovery Period here. Get those nice deep breaths in, and after youre done with your ten seconds, you get back to work. Reporter the h. I. T. Regimen varies from place the place. Here the goal is to work out in what they call the orange zone, at a high intensity level for 12 to 20 minutes of an hourlong class. I felt completely out of shape. Reporter 36yearold shelly ramsammy has asthma and used to be afraid of vigorous exertion. Training well and last summer she had added incentive. I was trying to get fit for a trip. Im going to be in a bikini. I have to get fit. Reporter after building up slowly, exercise experts recommend, she now runs twice as fast as before. Research shows highintensity training stimulates the muscles to burn fat and sugar more effectively. Why is it hot now . I think because research has been showing that it can be pretty powerful in improving peoples risk factors for Heart Disease and diabetes. Reporter powerful, too, in getting some people off the couch. Because at the end of the day, exercise works best if you actually do it. Dr. Jon lapook, cbs news, new york. Thats the overnight news for this tuesday. For some of you, the news will continue. For others, check back with us a little bit later for the morning news and cbs this morning. York city, im scott pelley. Captions by vitac www. Vitac. Com this is the cbs overnight news. Welcome to the overnight news. Im elaine quijano. President obama fired the opening shot in the latest battle over gun control. He met with attorney general Loretta Lynch and fbi director james comey to come up with a strategy to reign in gun violence. The president plans a series of executive actions to make it more difficult for some people to purchase weapons. And hell do it without going through congress. People every single year who are killed by guns. We have suicides that are committed by firearms at a rate that far exceeds other countries. We have a frequency of Mass Shootings that far exceeds other countries in frequency. And although it is my strong belief that for us to get our complete arms around the problem, Congress Needs to act. What i asked my team to do is see what more we could do to strengthen our enforcement and prevent guns from falling into the wrong hands, to make sure that criminals and people who are mentally unstable, those who could pose a danger to themselves or others are less likely to get a gun. Report from attorney general lynch, director comey, as well as Deputy Director brandon, about some of the ideas and initiatives they think could make a difference. And the good news is, these are not only recommendations that are well within my legal authority, and the executive branch, but theyre also ones that the overwhelming majority of the american people, including gun owners, support and believe. So over the next several days, well be rolling out these initiatives. Well be making sure that people have a very clear understanding of what can make a difference and what we can do. And although we have to be very clear this is not going to solve every Violent Crime in this country, its not going to prevent every mass shooting, out of the hands of criminals, it will potentially save lives in this country. And spare families the pain and the extraordinary loss that theyve suffered as a consequence of a firearm being in the hands of the wrong people. Im also confident that the recommendations that are being made by my team here are ones that are entirely consistent with the second amendment, and peoples lawful right to bear arms. Reporter already it has a lot of people on capitol hill fired up. Jan crawford reports. Reporter the president is going to be holding a series of events, then hes going to sign those executive actions he hopes will help curb some of this gun violence. But before we know the details, opponents are sharpening their attacks. My new years resolution is to move forward on our unfinished business. Reporter president obama teased this latest round of executive actions over the weekend. Act of violence. But what if we tried to stop even one . Reporter he signalled a move last month in an interview with norah odonnell, after 14 people were killed in San Bernardino by terrorists using legally purchased firearms. Theres some steps we could take not to eliminate every one of these Mass Shootings, but to improve the odds that they dont happen as frequently. Reporter nearly three years after the president side stepped congress with 23 executive actions on gun control, advocates are urging him to do more. The white house is now considering several steps to clarify existing laws, forcing more gun sellers to conduct background checks on potential buyers, and making it more difficult for convicted domestic abusers to acquire firearms. Democratic candidates for president were quick to praise the president s upcoming action. Most gun owners in this country understand that people not be able to buy them. What if its republican that walks into the white house . Within the first day, the executive orders will be reversed. Reporter the republicans immediately objected. On my first day behind that desk, those orders are gone. The new president comes in, boom, first hour, first minute, you can rescind that. Reporter and they attacked the president for going around congress. This president wants to act as if hes a king, a dictator. This topdown driven approach doesnt create freedom or safety, it doesnt create security. Reporter now with all these legal questions swirling around whether the president even has the authority to do this, to do an endrun around congress, one thing is almost certain, this all is probably going to end up in court. In the wilds of oregon, a group of selfstyled militiamen continue to occupy several buildings in a federal wildlife refuge. The group calls itself citizens for constitutional freedom. Members are apparently armed and are protesting the way the theres no visible Law Enforcement presence in the area, and the fbi insists its seeking a peaceful resolution. John blackstone reports. Reporter while the American Flag is draped over the sign here at the wildlife refuge, and thats the protesters signal that they are in charge here, theyre calling on supporters from across the country to come and join them here. They say theyll stay here as long as it takes, until their demands are met. At the occupied compound, protesters are setting up camp and settling in for the long haul. Ammon bundy is leading the occupation. He says theyre fighting back against the governments expansion of the over 100yearold federal wildlife refuge at the expense of local ranchers. This refuge here is rightfully owned by the people, and we intend to use it. Reporter back in 2014, bundys father, cliven, was federal officials over grazing rights on federal land in nevada. That escalated into an armed confrontation. This group set up camp saturday after a march in a nearby town in support of two ranchers. Dwight hammond and his son steven were convicted of setting fires on federal land in 2001 and served jail time. They say it wasnt arson, but controlled burns to protect their property. In october, a judge added four more years to their sentence. 73yearold hammond says this could be a death sentence for him. This makes it over for me. It j