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From Yanbu to Sohar: Tracking Saudi Arabia's alternative oil routes
Did Iran capture a US submarine? Saudi Arabia's oil exports took another blow last week when drone attacks knocked out part of the country's East-West pipeline, halting oil flow and removing 4-5 million barrels per day (bpd) of oil from global supply. It is unclear how long repairs will take, although The Associated Press estimates three to five weeks, citing two regional officials. The 1,200km (746-mile) pipeline connects the kingdom's main oil-producing fields in the east of the country with Yanbu port on the Red Sea coast in the west, allowing Saudi crude to bypass the Strait of Hormuz, which has largely remained closed since the United States-Israel war on Iran began on February 28. As the world's second-largest oil producer, Saudi Arabia's ability to keep crude flowing has significant consequences for global energy markets.
Saudi Arabia shuts critical oil pipeline after drone attack: What it means
Did Iran capture a US submarine? Saudi Arabia has temporarily closed its critical East-West oil pipeline, a 1,200km (746-mile) conduit stretching across the Arabian Peninsula, after it was attacked by drones on Friday. The drones were reported to have been launched from Iraq, where an investigation is under way. No group has claimed responsibility for the strikes so far. It is understood that equipment used to operate the pipeline was also hit.
How Ukraine's deepest attack in Russia, on Arctic gas, signals new reach
Is the war entering a new phase? Ukraine launched its deepest-ever attack into Russia, targeting two Arctic gas condensate facilities more than 3,000km (1,865 miles) from its border, on Wednesday, signalling that Ukraine has further developed its military capabilities as the Russia-Ukraine war continues through its fifth year. Unconfirmed videos circulating on social media show large clouds of thick, dark smoke and fire at the Novy Urengoy plant in western Siberia, recorded from a distance. Dmitry Artyukhov, the governor of the Yamalo-Nenets Autonomous Okrug region, wrote on Telegram that the drone attacks had been intercepted and "debris from the drone caused a fire upon impact". There have been no reports of deaths or injuries.
Intermittent swimming promotes the energy efficiency of fish-like robot movements
Improving energy performance can effectively extend the time a robot can operate and reduce battery load, enabling lighter, more flexible, and more durable robotic systems. Nature has evolved optimal energy-saving locomotion strategies through billions of years of natural selection, providing unparalleled blueprints for robotic optimization. Among diverse modes of aquatic locomotion, intermittent swimming, also called bout-and-glide swimming, is a widespread adaptive behavior in aquatic organisms of a wide range of sizes, including larval zebrafish, red-nose tetra, koi carp, and even whales. This natural bout-and-glide gait features alternating motion phases: short periods of active body and tail undulation for propulsion, followed by passive gliding with a streamlined, straight body posture. It is widely recognized that this intermittent swimming gait is closely associated with optimizing biological energy, making it of great research value to transplant and explore such natural motion mechanisms into robotic control systems.