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The top US Navy SEAL recently sent a blistering letter to the force, writing in boldface type, "We have a problem," following several high profile incidents of alleged misbehavior by the US Navy's elite service members, CNN has learned.Rear Adm. Collin Green has given commanders until August 7 to detail the problems they see and provide recommendations on how they will ensure troops are engaging in ethical and professional behavior.The letter -- dated July 25 and exclusively obtained by CNN -- comes in the wake of several high profile incidents of alleged misbehavior by SEALs."I don't know yet if we have a culture problem, I do know that we have a good order and discipline problem that must be addressed immediately," Green said.Although Green, commander of Naval Special Warfare Command, does not mention specific incidents, the letter comes on the heels of an entire SEAL team being sent home from Iraq following allegations of sexual assault and 970

Thursday marks Pi Day, otherwise known as 3.14, which marks the ratio of a circle's circumference to its diameter. While the average citizen can easily remember the 3.14 ratio, the exact ratio practically has an infinite amount of numbers. If you want a more precise pi ratio, it is 3.141592653589793238462643383279. How well do you think you could remember just those 30 digits? One man was able to remember the ratio of pi up to 70,000 decimal places. Rajveer Meena accomplished the feat on March 21, 2015 while wearing a blindfold. According to the Guinness Book of World Records, Meena's feat took nearly 10 hours to accomplish. According to Five-Thirty-Eight, there are now more than 22 trillion know digits to pi. According to Five-Thirty-Eight, it took a Dell computer nearly 105 days of computation to come up with the large number of digits. This is compared to just 2,000 known digits of pi in the mid-20th century. So how does one remember so many digits? Savant Daniel Tammet, who is able to remember pi's calculation to more than 20,000 digits, told David Letterman, "What I am doing is visualizing numbers." he said. "When you look at a number, you just see the numbers four and three. When I am looking at numbers, I am seeing different colors and shapes and textures. It is called 'synesthesia.' My brain is working in such a way I am looking and also experiencing color. It is two senses combined. "Having a more exact number of pi helps scientists at NASA conduct more precise experiments and calculations. Having more exact figures helps lend precision to projects such as landing rovers on Mars, sending spacecraft into deep space or tracking the movement of asteroids. To see many of the ways NASA uses pi, click 1746

The Supreme Court agreed on Friday to put on hold lower court rulings that ordered new voting maps in Michigan and Ohio.The move was widely expected as the justices are currently 191

There have been 971 cases of measles reported in the United States this year, the US Centers for Disease Control and Prevention said Thursday.This means 2019, which is not quite half over, now has the greatest number of cases in a single year in nearly three decades.The number of cases in 1994 was 963, which was lower than in 1992 when there were 2,237 cases."Measles is preventable and the way to end this outbreak is to ensure that all children and adults who can get vaccinated, do get vaccinated. Again, I want to reassure parents that vaccines are safe, they do not cause autism. The greater danger is the disease that vaccination prevents," said CDC Director Dr. Robert Redfield.Measles was eliminated in the United States in 2000, meaning it was no longer continuously transmitted in the country.Cases have been reported in 26 states this year so far.New York has been the largest contributor to this year's unfortunate milestone with nearly 700 cases of measles reported this year in the state. Most of those cases have been in Orthodox Jewish communities with low vaccination rates.Clark County in Washington state had the second-largest outbreak in the US this year with more than 70 cases reported. The county has low vaccination rates."If these outbreaks continue through summer and fall, the United States may lose its measles elimination status. That loss would be a huge blow for the nation and erase the hard work done by all levels of public health. The measles elimination goal, first announced in 1963 and accomplished in 2000, was a monumental task," the agency said in statement. "Before widespread use of the measles vaccine, an estimated 3 to 4 million people got measles each year in the United States, along with an estimated 400 to 500 deaths and 48,000 hospitalizations."The elimination of the virus in the United States is attributed to widespread measles, mumps and rubella vaccination and a "strong public health infrastructure to detect and contain measles," according to the CDC."Your decision to vaccinate will protect your family's health and your community's well-being," Redfield said. "CDC will continue working with public health responders across our nation to bring this outbreak to an end."The cases in the Unites States are imported from international travel and then local outbreaks begin when the highly contagious illness spreads to those who are not immune to the virus from vaccination or having recovered from measles. With the busy summer travel season just about to get underway there's concern about continued importation of measles among vacationers.In communities with 95% or more of residents who are vaccinated against the virus, herd immunity works. That's when unvaccinated people are protected because so many of those around them are.Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases 2896

Tiffani O'Brien said she woke up on an empty Air Canada plane, in the dark and "freezing cold," after a short flight from Quebec City to Toronto's Pearson International Airport, CNN network partner CTV reported."It's just a sheer sense of helplessness when you feel like you're locked on this aircraft," 316