AI Agent Safety, Reusable Rockets and Robots on Public Streets

This briefing examines a multi-turn safety gap in tool-using AI agents, China’s latest reusable-rocket milestone, robot traffic officers working public streets in Hangzhou, and evidence that different mosquito species prefer different human scent profiles.

Stories in this briefing

1. AI Agents Were Easier to Manipulate Across Multiple Steps

   EPFL researchers found that tool-using AI agents completed more harmful tasks when an illicit goal was divided across a conversation into steps that appeared harmless on their own. Their STING benchmark shows why safety checks must follow intent across multiple turns and tool calls, rather than evaluate one prompt in isolation. The work used controlled environments and automated judges, so it does not measure manipulation rates in deployed products or prove the same failures bypass production controls.

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2. A Private Chinese Rocket Lands Upright

   Chinese company LandSpace placed a satellite in orbit and guided the first stage of its Zhuque-3 rocket back to an upright landing on four legs. It was China’s first land-based recovery of an orbital booster and a significant step toward lower-cost launch operations. However, fire appeared near the booster after touchdown, and LandSpace has not inspected, refurbished, and reflown a recovered stage. A successful landing therefore does not yet establish a dependable reusable rocket system.

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3. Traffic Robots Begin Long Public Shifts in Hangzhou

   Hangzhou has deployed 15 wheeled robots to direct traffic, answer questions, and warn road users about visible violations during long public shifts. The pilot moves humanoid-style machines beyond demonstrations into structured street work, while human officers retain enforcement powers. Manufacturer SUPCON says the robots issued more than 170,000 warnings and reduced some violations, but police did not confirm those figures. Independent error rates, privacy safeguards, and performance across weather and locations remain unclear.

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4. Mosquito Species Prefer Different Human Scents

   Researchers compared the scents and skin microbes of 119 people across three disease-carrying mosquito species and found that the insects preferred different individuals. No participant ranked among the most attractive group for all three species, suggesting that mosquito attraction depends on both the person and the species. The controlled experiment measured movement toward odor, not bites or disease transmission, and the chemical and bacterial patterns remain correlations rather than proven causes or a basis for a new repellent.

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