Atmospheric Rivers Have Shifted Towards Earth's Poles, Bringing Big Changes To Weather. IFLScience.com article. Pull quote: “For a region like southern California, the northward movement of atmospheric rivers could reduce rainfall even further, leading to more problems with water scarcity, droughts, and wildfires. Meanwhile, regions like the Pacific Northwest might see even wetter weather, unleashing issues like flooding.”
Positive Train Control Systems. Federal Register FRA notice of proposed rulemaking. Summary: “FRA is proposing to amend certain regulations governing positive train control (PTC) systems. Since December 31, 2020, by law, PTC systems have generally governed rail operations on PTC-mandated main lines, which encompass nearly 59,000 route miles today. Through FRA's oversight and continued engagement with the industry, FRA has found that its existing PTC regulations do not adequately address temporary situations during which PTC technology is not enabled, including after certain initialization failures or in cases where a PTC system needs to be temporarily disabled to facilitate repair, maintenance, infrastructure upgrades, or capital projects. FRA expects PTC systems to be reliable and robust, further reducing the occurrence of initialization failures and outages. This NPRM proposes to establish strict parameters and operating restrictions under which railroads may continue to operate safely in certain necessary scenarios when PTC technology is temporarily not governing rail operations. The purpose of this NPRM is to enable continued, safe operations and improve rail safety by facilitating prompt repairs, upgrades, and restoration of PTC system service.” Comments due: December 27th, 2024.
Male mosquitoes sometimes suck, too. ScienceNews.org article. Pull quote: “In nature, A. aegypti is the main carrier of yellow fever, but can also spread Zika, chikungunya and dengue, while female C. tarsalis can spread West Nile, St. Louis encephalitis and related diseases (SN: 8/26/24; SN: 6/2/15). Male C. tarsalis mosquitoes can be infected with West Nile virus and produce infectious virus in their saliva just like females can, the researchers found.”
Rwanda identifies index case for current Marburg virus outbreak. CEN.ACS.org article. Pull quote: “In an earlier meeting, on Oct. 20, Nsanzimana had revealed that it's very likely the first human Marburg virus disease case in the current outbreak was in a 27-year-old man who had been exposed to fruit bats in a cave where mining occurs. The individual had sought treatment at Kigali’s King Faisal Hospital, where he was first diagnosed with and treated for malaria, and Marburg was detected only later. By then, the infection had spread to his close contacts and several health-care staff.”
One year in, TSA’s cybersecurity directive lays
groundwork for railroad sector amid rising digital threats.
IndustrialCyber.co article.
Pull quote: ““These are the ABCs of OT cybersecurity management – fundamental
practices that must be implemented correctly,” Geyer said. “It is critical to
refine how these processes can be operationalized, especially given the number
of vulnerabilities. Although the directive doesn’t outline an exact order of
steps, organizations can look to CISA’s Known Exploited Vulnerabilities (KEV)
catalog for guidance on addressing the most pressing risks.””
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