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How uncrewed narco subs could transform the Colombian drug trade

MIT Technology Review

Fast, stealthy, and cheap--autonomous, semisubmersible drone boats carrying tons of cocaine could be international law enforcement's nightmare scenario. A big one just came ashore. Colombian military officials intercepted this 40-foot-long uncrewed fiberglass "narco sub" in the ocean just off Tayrona National Park. On a bright morning last April, a surveillance plane operated by the Colombian military spotted a 40-foot-long shark-like silhouette idling in the ocean just off Tayrona National Park. It was, unmistakably, a "narco sub," a stealthy fiberglass vessel that sails with its hull almost entirely underwater, used by drug cartels to move cocaine north. The plane's crew radioed it in, and eventually nearby coast guard boats got the order, routine but urgent: Intercept. In Cartagena, about 150 miles from the action, Captain Jaime González Zamudio, commander of the regional coast guard group, sat down at his desk to watch what happened next.



Watch: Skier tells BBC of 'panic' as avalanche hit Italian slopes

BBC News

Watch: Skier tells BBC of'panic' as avalanche hit Italian slopes A skier filmed the moment an avalanche struck a mountain valley in northern Italy on Tuesday. The footage, filmed by Siobhan Halford, shows a group of people, including children, in a queue, covered in snow after being hit by the aftermath of an avalanche in Courmayeur. Speaking to the BBC News Channel, Halford, who is from Billericay, Essex, described how the moment unfolded. We couldn't see, it was hard to breathe. There was a lot of panic, she said.


Indian university faces backlash for presenting Chinese robot as its own

Al Jazeera

An Indian university is facing backlash after one of its professors was caught falsely presenting a Chinese-made robot dog at a major artificial intelligence summit, it has reportedly since been asked to leave, as the institution's own. "You need to meet Orion. This has been developed by the Centre of Excellence at Galgotias University," Neha Singh, a professor of communications, told Indian state-run broadcaster DD News this week. The episode has drawn sharp criticism and has cast an uncomfortable spotlight on India's AI ambitions. The embarrassment was amplified by Electronics and Information Technology Minister Ashwini Vaishnaw, who shared the video clip on his official social media account before the backlash.



Debiasing Conditional Stochastic Optimization Lie He

Neural Information Processing Systems

The sample-averaged gradient of the CSO objective is biased due to its nested structure, and therefore requires a high sample complexity for convergence. We introduce a general stochastic extrapolation technique that effectively reduces the bias.