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While the 5ppb action level that we set will be difficult to achieve, it's the right thing to do for the health and safety of our students. We will continue to confront this challenge until all schools are below the 5ppb standard. For more info: https://t.co/WHSJKeeH9q (2/2)— San Diego Unified (@sdschools) May 22, 2018 320

When NASA created the first space missions, they knew astronauts flying on the Mercury and Apollo missions would need special suits. Most of the men were Air Force test pilots. And fittingly, the suits were upgrades of Navy flight suits for high altitudes.The agency now knows more about the moon and what to expect on the lunar surface. For example, ahead of the Apollo 11 moon landing, engineers worried that the moon dust wouldn't be stable enough to support the lunar lander or even astronauts walking on it.They discovered a different risk in the dust -- tiny shards of glass-like material. And the moon's temperature extremes could compromise the safety of the astronauts.The new suit is designed to keep out dust so that it doesn't infiltrate the life support system and can keep an astronaut safe between the temperature extremes of negative 250 degrees to 250 degrees Fahrenheit, accounting for shade and sun, especially at the south pole.The suit itself looks similar to the Apollo-era ones with its backpack functioning as the life support system that astronauts can wear on the lunar surface. It powers the suit, holds oxygen, removes toxic gases, odor and moisture from the suit, regulates temperature, monitors performance and issues warnings.But the most notable differences are in the details. Technology has been miniaturized to allow for duplicates to avoid errors. This could even allow for longer spacewalks."The Artemis Generation of spacesuits will fit everyone," said NASA Administrator Jim Bridenstine. "We want every person who dreams of going into space to have that opportunity."Anatomy of a spacesuitThe new suit is also slightly sleeker, allowing a greater range of motion while still protecting the astronauts from radiation, temperature extremes, and micrometeoroids.The main suit is a pressure garment consisting of a helmet, upper torso, lower torso and a cooling garment.A new communications system in the helmet replaces the "snoopy caps" the Apollo astronauts wore, which would fill with sweat. Instead of the microphones that would sometimes shift away from the astronauts mouth, multiple microphones are embedded that activate when the astronaut is talking.To allow for mobility, the upper torso has a new shoulder placement so the astronauts can move their arms in a range of motion, lift objects overhead or reach across their body. The Apollo suits only really accommodated up and down motion, but the new suit provides full arm rotation from shoulder to wrist.The lower torso, a new addition, will allow for better bending and rotating at the hips and knees. The so-called "moon boots" are similar to a hiking boot with flexible soles.One thing remains the same: the astronauts will continue to wear absorbing garments similar to diapers in the event that they need to go to the bathroom during a long spacewalk.Customization on the jobThe suits are comprised of parts that can lock together for a spacewalk on the lunar surface or even in zero gravity like outside of a spacecraft or the International Space Station. NASA wants to use this same technology when their astronauts attempt a Martian landing.The helmet will include a protective visor that can be replaced if it's damaged, scratched or dented. That way, astronauts can continue on with spacewalks rather than having to send the helmet back to Earth for repairs.Going from zero gravity to the limited gravity of the moon requires different capabilities. The lower torso, consisting of pants and boots, could be modified from supporting an astronaut walking on a surface compared to floating in space, where they don't need to use their legs as much.The suit will allow astronauts to climb into it from the back. This means the shoulder pieces can be closer together, allowing for a better fit, more mobility and reducing any risk of shoulder injury.Customization also means a better fit for astronauts. Each astronaut has a full body scan while wearing the suit at NASA's Johnson Space Center. That can be used to determine the best suit components for a particular astronaut to protect their full range of motion and ensure a perfect fit.The suits will undergo testing on the International Space Station before they're used for Artemis missions. NASA will then have a better idea of how the suits function in zero gravity while the astronauts conduct science and basic operations. 4385

Yesterday, the Nevada Republican Party said that it has received "thousands of complaints" by voters with issues during the General Election and that it's investigating each one closely.Shortly after the GOP made that announcement, Clark County Registrar of Voters Joe Gloria answered questions about it during a press conference on Wednesday. He said at the time that he had not received any specific complaints from the party when asked about it by a reporter."Other than issues in the polling place regarding some of their observers," said Gloria, "we addressed them where we could. But no I haven't had anything provided to me."Amy Abdelsayed from KTNV.com contributed to this story 686

When you have two races in a row it's important to keep that mental energy stable and I didn't really do that so all of the tools that I have that make me feel equipped to handle whatever pressure I feel I didn't have anymore. 226

Witnesses described the surreal scene after the plane left the airport. John Waldron was walking along a trail near the bay when he noticed the two military jets following a plane doing aerobatics."I thought they were practicing for an air show," he said.After the plane approached Ketron Island, Waldron saw a thick column of smoke followed by a loud explosion, he said."Everyone was literally frozen in place, muttering about what possibly happened," he said.Kethleen Reichel said she watched the planes pass by for about two minutes."My husband and I are recently former Boeing employees, and we were wondering why a jet was near the passenger airplane," she said. "We heard the jet because our windows were down while we were waiting in the ferry line to go to Anderson Island, which is adjacent to Ketron Island." 818