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A new self-driving shuttle bus got off to a bumpy start in Las Vegas.When the service debuted in the city on Wednesday, one of the driverless vehicles was involved in a collision with a delivery truck, the Las Vegas government said in a statement.During the incident in downtown Las Vegas, the bus automatically stopped to try avoid an accident after its sensors detected the truck, the city said. 405

A stampede of Central American migrants rushed to the tracks Saturday when the first whistle of the train rang out.After a few days in Mexico City, it was time to continue their journey north to the US border. About 500 migrants traveling in a caravan climbed onto the freight train just outside the Mexican city of Tultitlán. 334

A Tennessee man was arrested after watching ISIS videos, and then lying about his stay at a mental institution when he tried to buy a sniper rifle, according to federal officials.According to a federal indictment, federal agents began looking into Khari Malik Whitehead last year, after they talked to someone who knew him. That person told Metro Nashville Police they were concerned Whitehead was watching ISIS propaganda videos on the internet.They also told the ATF Whitehead may have possibly been radicalized, and that they were afraid that he may commit a mass murder one day.The indictment said Whitehead was committed to a mental institution late last year, but he lied about that in February on a background check form he filled out at the Walmart in La Vergne as he tried to buy a semi-automatic rifle. He asked to purchase a rifle that could "hold a lot of bullets"However, the purchase didn't go through. His stay at the mental institution was picked up by the background check, and Whitehead was denied the purchase.Whitehead's lie on the background check form was enough for federal prosecutors to file charges against him. 1175

A new study takes a look at how deep the problem of plastics in the ocean goes. Studies have looked at the quantity and spread of plastics in the world’s oceans, and now scientists are getting a better idea of how much of that litter is sinking down to the sea bed.The study, from Australia’s national science agency CSIRO, estimates there is 14 million metric tons of microplastics sitting on the ocean floor. That would be more than 35x as much plastic scientists believe is floating on the surface of the ocean.Microplastics are defined as pieces of plastic that have been worn down by the ocean and other elements into tiny fragments, smaller than 5 millimeters.The team collected samples of deep-sea sediments up to 9,800 feet deep from sites around the Great Australian Bight off the coast of South Australia. The robotic submarine took 51 samples.Scientists found an average of 1.26 microplastic pieces per gram of sediment in the samples.Dr. Denise Hardesty, Principal Research Scientist and co-author of the study, said they were "surprised to observe high microplastic loads in such a remote location.""Our research found that the deep ocean is a sink for microplastics," Hardesty said. "By identifying where and how much microplastic there is, we get a better picture of the extent of the problem."Around 150 million metric tons of plastic are already floating in our oceans -- with an additional eight million tons entering the water each year, according to the World Economic Forum.The researchers say most of the plastic dumped into the ocean likely ends up on the coasts, rather than on the ocean's surface or floor.The samples were taken in the spring of 2017; the study was published in Frontiers in Marine Science on Monday. 1750

A Pennsylvania woman is accused of stabbing an 8-day-old baby last week, claiming the child was created "by the devil," WPXI-TV reported.According to WPXI, Tanishia Fielder, 32, was charged with attempted homicide and aggravated assault after a man reported to police that he and the infant were stabbed by Fielder.Both the man and infant survived the incident, but their exact conditions were not disclosed. Fielder reportedly stabbed the infant near the baby's right eye. Fielder told police that God told her to kill the infant and dismember the body. The police said they found the knife hidden beneath a garbage bin behind the apartment building, WPXI reported.The man involved told police he and Fielder got into an argument earlier in the day and he saw her with a knife. 826