The Amped Journal

Iran's Islamic Revolutionary Guard Corps navy announced the Strait of Hormuz is closed "until further notice," Iranian state media reported, marking a sharp escalation days after a fragile ceasefire with the US had appeared to hold.

The closure followed renewed American strikes on Iran, which the US said were launched in response to an attack on a Cyprus-flagged container ship, according to Reuters.

The strait is one of the world's most critical oil chokepoints, with roughly a fifth of global petroleum shipments passing through it daily. A sustained closure threatens to push energy prices higher and marks a major test of whether the ceasefire that followed Trump's "1,000 missiles" warning last week can hold.

OpenAI CEO Sam Altman said physicians reviewing medical responses found fewer errors in answers generated by GPT-5.6, the company's latest model line, than in responses written by human doctors.

The claim landed alongside a similar note from venture capitalist Marc Andreessen, general partner at Andreessen Horowitz, who wrote that "AI is already a better doctor than 99.99% of human doctors," calling it good news.

Altman separately said AI has so far been "net job-creating" in the economy, adding that he expected to see some negative employment impact by this point in the technology's capability curve and hasn't - though he cautioned "it is possible this direction keeps going."

SpaceX and Elon Musk both said Starship's 13th flight test is targeted for as early as Thursday, July 16, from Starbase in Texas.

But NASASpaceflight reported a broken actuator on Booster 20 at Starbase's Pad 2 has delayed transporting the booster back to the production site for final closeout work, pushing the next road closure to Sunday morning.

The booster, part of the upgraded Super Heavy V3, completed a full 33-engine static fire earlier in the week. Whether the actuator repair holds up the Thursday target is the next thing to watch.