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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) -- Getting into the holiday spirit may have you looking for opportunities to give back.Throughout San Diego County, there are plenty of opportunities to volunteer time to local organizations.Ring a bell while collecting Red Kettle donations for the Salvation Army or make a DIY toy for a pet in need for the San Diego Humane Society. Check out the list below for ways to volunteer and get involved:  434

SAN DIEGO (KGTV) - Eighteen-year-old Joseph Preissman is getting ready for his very first day as a college student. But a mistake he made last December is dragging down his final days of summer."It'd be really great to just figure out why we're getting charged so much for something so little, and something that was, like, an accident," he said. The accident happened near Idyllwild. Preissman and a friend were returning from a hiking trip, when he said it hailed. Preissman was coming around a bend and lost control of his car, running into a freeway directional sign and splitting its wooden post. Nobody was hurt, so Preissman thought the accident was ancient history. That is, until July 31, when the Preissman family got a bill from Caltrans to replace the sign - totaling 7.95. All but about of that bill was for labor. "I could even understand half that cost, but I can't understand how it could possibly take three people, let's say from 8 in the morning to 12 in the afternoon, to repair that sign," said Daniel Preissman, Joseph's father. Caltrans spokeswoman Emily Leinen stood behind the bill. She said about 0 of it went to administrative fees. Much of the rest reimbursed the crews for going out to the area and replacing the 16-foot-tall post. They had to make sure it had the proper breaking points for driver safety. Leinen added one crew member had to keep watch for other cars coming around the bend."It's rocky road terrain out there, it’s a mountain, so unfortunately they had to do everything by hand on a blind corner," Leinen said. Caltrans did offer the Preissman's a 10% discount and a payment plan, but Daniel Preissman said even with that the bill is excessive. 1710

SAN DIEGO (KGTV) — Demonstrators gathered across the county to demonstrate against police violence ahead of several expected protests during the weekend.Events in Carlsbad and Escondido brought demonstrators to street corners and parks with signs and cries for action, in response to police killings of black men sparked after the death of George Floyd in Minneapolis. Similar events were also planned for Oceanside and San Diego.Friday's gatherings mark about a week of daily protests calling for police reform around the county. This week, some of those reforms materialized in moves by local departments to end the use of the carotid restraint technique. City Council President Georgette Gomez also called for leaders to docket a ballot measure to expand police oversight and create an independent police practices commission this month.This weekend, demonstrations planned for San Diego, Chula Vista, Santee, and Encinitas are expected to continue calls for reform and show solidarity with the Black Lives Matter movement. 1034

SAN DIEGO (KGTV) -- Fire crews are on scene after a commercial building burst into flames Saturday morning.The fire erupted near Carroll Road and Miramar Road just before 8 a.m. Saturday morning.More than 60 units responded to the three-alarm fire, according to authorities.By the time fire crews arrived on scene, flames were shooting through the roof. No one was inside the building at the time of the fire.The cause of the fire is still under investigation, but crews say power to the building was turned back on before the fire started. 548