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SAN DIEGO (KGTV) -- For over a decade, SDSU associate professor of chemistry Gregory Holland has been researching spiders and particularly black widow’s silk.They’ve come to the realization, through their research, that the properties of black widow silk are stronger than steel and tougher than the Kevlar in bulletproof vests.Gregory Holland, SDSU associate professor of analytical chemistry and Northwestern chemistry professor Nathan Gianneschi said their collaboration shows the organization of the molecules involved in silk production is more complex than previously thought.There are companies that use synthetic spider silk but its the specific black widow spider silk that has the top tier benefits.“The synthetic spider silk its not a bad material, its just not as good as the real thing," Holland said.Holland says the company that creates synthetic silk actually has partnerships with Adidas and Patagonia. "The most important thing is a spider does it low energy, environmentally friendly. It’s just protein water and salt”.Once they reach the point where they’re able to identically replicate the silk of a black widow spider, the artificial version could be used in building materials for bridges or environmentally friendly replacements for plastic.Black widows (Latrodectus hesperus) spin a lightweight thread much stronger than that of other spider species, with draglines that can stretch an extra 25 percent of their length before snapping.The composition of the spun silk fibers was previously identified, but the structure of the proteins involved in producing them has been more of a mystery, now one step closer. 1650
SAN DIEGO (KGTV) -- Firefighters have extinguished the fire that caused a hotel near Harbor Island Park to be evacuated Wednesday afternoon. Firefighters say the two-alarm fire broke out at the Sheraton on the 1300 block of Harbor Island Drive. No one was injured, but the fire, which took place in the hotel's elevator shaft, caused at least 0,000 in damage. Firefighters were alerted to the fire after they say people reported heavy smoke coming from the elevator shaft.At this time, the cause of the fire is unknown. 551

SAN DIEGO (KGTV) - Family and friends of Gunnery Sgt. Derik Holley say he was a man of service. The Miramar Marine was one of four killed in a helicopter crash near El Centro during a training exercise on Tuesday. RELATED: Four Marines killed in helicopter crash near El Centro identified"It's unreal. It breaks your heart," Holley's friend, Dan Hark, said. "The first thing I thought of was his son and his wife." 438
SAN DIEGO (KGTV) — For the first time ever, the County Administration Center raised the Pride flag in San Diego to celebrate the start of Pride weekend.As what is traditionally Pride weekend in San Diego gets underway, virtual events are set to continue the celebrations and focus on local leaders and their contributions to the LGBTQ community."Today for the first time ever, the Pride flag was raised at the County Administration Center to celebrate the start of San Diego Pride weekend. We stand and celebrate with the LGBTQ community," the county tweeted. RELATED: San Diego Pride goes online with lineup of virtual eventsThe milestone comes ahead of a virtual Pride weekend, featuring the Spirit of Stone Wall Rally on Friday at 6 p.m. and Pride Live on Saturday starting at 10 a.m., in place of the annual festival and parade. At about 7:55 p.m. on Friday, the administration building and parking garage on Kettner Blvd. will also be illuminated in the colors of the Pride flag and be lit every night during Pride weekend. 1036
SAN DIEGO (KGTV) -- Despite pleas from health agencies to stay home during the holidays, millions of Americans are taking to the skies.A crowded airport and long-awaited hugs are exactly what health officials did not want to see this holiday season."The airport, I felt, was a little more crowded than expected," traveler David Miller said. "People apparently want to travel in spite of COVID."Whether it's to see an elderly family member, not break tradition, or make up for lost time, travelers packed the San Diego International Airport Thursday."They had to cancel Thanksgiving. They were coming home, and we didn't see them then, so we wanted to see them now," Miller's wife, Jan, said.Health officials have been warning for weeks that Christmas travel is like a 'Super Spreader' of the COVID-19 virus. Gatherings will cause a surge in the already short-staffed hospital systems, and that the death toll will increase. But even with the direst public health warnings, the TSA says around one million people have gone through their checkpoints every day since Dec. 18, 2020.Jan and David Miller flew into San Diego Thursday afternoon."I had concerns, probably greater than my wife, that perhaps flying wasn't a safe choice. However, my wife said I'd be living with a very depressed wife if we didn't come to see our children in California," Miller laughed.So it turned from a guilt trip to a Christmas trip. But the Millers say they are taking serious precautions."Our son thought maybe it would be safe for us to quarantine some and spend time apart from them in a separate location, so we're doing that in an Air BnB," David Miller said.They will first spend a little time away so that the rest of the time, they can enjoy all that San Diego has to offer together."The weather's a little bit more cloudy than what we're used to in San Diego, but obviously, it's much warmer than Ohio, where it is snowing right now," Miller said. 1943
来源:资阳报