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Maybe music artist Moby was right, and “we are all made of stars.” New research suggests the calcium in our teeth and bones came from star explosions.Researchers from Northwestern University looked at a calcium-rich supernova with x-ray imaging, which provided a glimpse into the last month of the star’s life and ultimate explosion.The findings, published in The Astrophysical Journal, suggest a calcium-rich supernova is a compact star that gives off an outer layer of gas as it’s dying. When it explodes, the star’s matter collides with material, emitting bright x-rays.The explosion is so intensely hot and high pressure, it allows nuclear fusion to produce a massive amount of calcium in mere seconds. Typically, a star creates a small amount of calcium slowly by burning helium.Half the calcium in the universe likely came from calcium-rich supernovae.“These events are so few in number that we have never known what produced calcium-rich supernova,” said Wynn Jacobson-Galan, a first-year Northwestern graduate student who led the study. “By observing what this star did in its final month before it reached its critical, tumultuous end, we peered into a place previously unexplored, opening new avenues of study within transient science.”The observed explosion was named SN 2019ehk in the Messier 100 galaxy. If that sounds a little too fantasy, just know it was 55 million light years from earth.“Without this explosion, you wouldn’t know that anything was ever there,” Margutti added. “Not even Hubble could see it.”The team was able to look at images from the Hubble Telescope of the area of SN 2019ehk before the explosion to compare before and after.The researchers are working on a follow-up study that includes how the supernova is evolving after the explosion, according to statements made to CNN. 1821

Love Shark Week? You may be in luck.USDirect.com says it will pay one lucky fan ,000 to watch every second of this year’s Shark Week on the Discovery channel. The person will also receive snacks to help get them through the viewing, as well as Shark Week “swag.”“Put yourself to the test—if you think you’ve got the guts,” wrote the company.USDirect says the “jawb” entails tweeting and sharing your favorite Shark Week fact each day, using the hashtag #SharkWeekDreamJawb.The person will also need to rank each program from least to best in the following categories: Most entertaining, most informative, most fearsome (scariest), and most surprising.The “job” will begin on Aug. 9 and last for an entire week.“We don’t care if you watch Shark Week in bed, in-between meetings, or at the dinner table (though your family may feel differently): as long as you watch every second of Shark Week 2020, ,000 is all yours,” wrote USDirect.To be considered, here’s what USDirect says it needs from you:· You gotta love sharks—enough to celebrate them for a whole week.· You have to be at least 18 years old and a U.S. resident.· You have to be willing to document your Shark Week marathon on your social media.Those interested can apply here. The deadline to submit an application is July 27 at 5 p.m. ET. 1310

Millions of people are about to update the most essential device in their lives -- their iPhone -- to Apple's new iOS operating system, iOS 11.Should you take the plunge and do it now, or wait until all the reviews are in, and all the bugs are out?iPhone users have concernsSome iPhone owners, like Ally Knestrict, have a few concerns. While having lunch outdoors, she was reading reviews, and decided she would wait a few days."I might hold off and wait a few days just to see what the issues are, and if it works well," she said.She had already heard of some problems with battery life. Others in the lunch crowd said they heard that it needs a lot of free space to download. Janelle Bagneski said, "I won't have enough space on my phone, if it requires two gigabytes." She is correct.So we compiled the pros and cons of Apple's newest iOS.The GoodThe look: iOS 11 is not as dramatic an update as iOS 9 and 10 were, when the whole look changed, and there was a learning curve.You will immediately notice some new looks, especially of the app store, and your options at the bottom of messages.Control Center: The control center is much simpler to use than iOS 10, which gave you three screens to swipe between. Now, music, flashlight, and the icons for Bluetooth and WiFi are all there on one screen, just like on Android phones. It's customizable, so you can change the widgets that appear there.Photos: Apple says the camera is improved, and photos will take up less space due to its new high efficiency image file format (HEIC), which takes up less room than JPEGs. (Though you will still have to option to save them as JPEGs). The Verge explains the file issues in detail.Do Not Disturb: A wonderful new Do Not Disturb improvement now alerts people who text you that you are driving, and cannot text back. You can turn this on or off manually, or with the iPhone 6 or newer, it will do it automatically when it senses you are diving. (Yes, you can turn it off if you are in a bus or a passenger). MetroUK has a good article explaining how this works.Do Not Disturb is just one of several new safety features, according to a good review in The Independent.Siri: The Siri voice assistant has too many improvements to list, but the biggest one is that she will do audio translations into French, Spanish and several other languages. This is a huge improvement for foreign travelers who don't know a word of their new country's language.Maps:  Maps now give more detailed information, and even speed limits of highways, as explained in a report in MacWorld.iPad: The iPad version now lets you easily run multiple screens and apps, making it look more like a Microsoft product (did I just say that?)The website TechDotMatrix lists a number of other good improvements with iOS 11.The BadOlder apps:  iOS 11 no longer supports older 32-bit apps, so if your favorite old app is not 64 bits, you will have to update or delete it.iPhone 5:  If you are still using a four- or five-year-old iPhone 5, you cannot download iOS 11 (here's a full list of devices that are compatible). It will work on the iPhone 5s, though some users report it slows the phone down. (If you still have the iPhone 4, you shouldn't be even reading this column. Please buy a new phone, then get back to me). I have a 5s, and so far everything is fine, though the phone feels a bit slower opening apps.Photo compatibility: The new HEIC photo format (to save space) may not be compatible with PCs and Microsoft-based photo editors without conversion to JPEG files. The Verge has a good writeup on this.? Microsoft Exchange issues: While we are talking Microsoft, some users report problems with the Exchange for iOS app, and with Outlook 365. I have not noticed this problem on my iPhone 5s, with the update.The UglyBattery Drain: Really, there's not much ugly with iOS 11, unless you find it dramatically draining your battery, as some early users report. Gotta Be Mobile explains what to do if your battery is now running down fast. Apple forums are already filled with suggestions for improving battery life if this happens, such as shutting off automatic app refreshing.Not enough space: Also, keep in mind you need two?gigs of free space to install the update. If you have an older iPhone with lots of videos on it, you may have to delete some videos or music.One hour download: Anticipate the whole download, updating and installation to take an hour on average.Don't try to do it on the fly, like 20 minutes before an important meeting (as I tried to do, oops). Also, there is a 10-minute period late in the installation process where you cannot use your phone at all, as all you will see is a slow bar moving.So it is best to do the update at home, at night, when there is no urgency. Finally, you may want to have the phone plugged in during the update, or you'll be stunned how much battery power that one-hour process will take. I was down to 25 percent at the end of the update. Glad I had a spare power cord in my desk.Otherwise enjoy, and don't waste your money.________________Don't Waste Your Money” is a registered trademark of Scripps Media, Inc. (“Scripps”)."Like" John Matarese on FacebookFollow John on Twitter (@JohnMatarese)For more consumer news and money saving advice, go to www.dontwasteyourmoney.com 5457

Many districts across the country are looking ahead to this fall and trying to make plans about how students could, or should, return to the classroom. A nationwide pediatric group is urging local leaders, parents and education systems to collaborate and create policies that allow for as much in-person learning this fall as possible.The American Academy of Pediatrics released guidance on their website based on in-person attendance at schools being not only fundamental to children’s mental, social and physical development, but also playing “a critical role in addressing racial and social inequality … it is critical to reflect on the differential impact SARS-CoV-2 and the associated school closures have had on different races, ethnic and vulnerable populations.”The recommendations include masks, physical distancing, and outdoor play, with more specifics. Such as, the AAP recommends placing desks 3-to-6 feet apart as long as it allows children to attend school; the 3-foot distance can be used when face coverings are also being worn.Middle and high schools should avoid groupings of students inside doing activities involving exhalation, i.e. singing, exercising, etc. according to the recommendations. The AAP also encourages limiting locker use and moving from room-to-room for classes.The guidance extends to school faculty and staff, with the AAP urging districts to make sure adults in schools get the support they need to set a good example and stay healthy.“In the same way that students are going to need support to effectively return to school and to be prepared to be ready to process the information they are being taught, teachers cannot be expected to be successful at teaching children without having their mental health needs supported.The U.S. Centers for Disease Control and Prevention last updated their guidance to schools and care facilities in April and it is focused on quickly stopping an outbreak, cleaning facilities and maintaining continuity in education and meal accessibility.AAP acknowledges any school policy this fall should be flexible and nimble, able to respond to new information about the coronavirus and specific needs in each school, district and region.“Although schools should be prepared to be agile to meet evolving needs and respond to increasing knowledge related to the pandemic and may need to institute partial or complete closures when the public health need requires, they should recognize that staff, students, and families will benefit from sufficient time to understand and adjust to changes in routine and practices.” 2591

LOUISVILLE, Ky. (WAVE) — An autopsy report revealed more details about the shooting death of Breonna Taylor.Taylor, 26, was shot multiple times by Louisville Metro Police Department narcotics officers serving a warrant just after midnight on March 13.Her autopsy was performed on March 14 at 8 a.m. at the Bingham Building.The autopsy showed Taylor was shot in the chest, which caused hemorrhages along the wound path; the right upper abdomen, in her left forearm, in her left thigh and in her right foot. An orange and gray metal projectile was also recovered from her right heel.Following the announcement of the grand jury decision in the case on Sept. 23, Attorney General Daniel Cameron said only one of those shots was fatal.Former LMPD Det. Brett Hankison was charged for shooting 10 rounds from outside Taylor’s apartment; some of those shots ended up in adjacent units, which was why he was indicted.Two other officers, Myles Cosgrove and Jon Mattingly, were found to be justified in their use of force, according to the grand jury.Cameron said evidence showed Mattingly fired six times, and Cosgrove fired 16 shots, and added that both were justified in returning fire after being fired upon. The attorney general also said the FBI lab confirmed the fatal shot came from Cosgrove but the KSP lab said it was not clear who fired the shot.Taylor tested negative for alcohol and drug use postmortem. 1414