
The waves were more than two metres high, tossing the sailing boat around like a walnut shell. Below deck on the Bavaria C50 yacht, just 15m (50ft) long, a Ukrainian diving crew waited nervously. The skipper had seen much worse and before the war he had sometimes enjoyed taking his clients into mild storms. But now he was concerned. “This isn’t diving weather. Are you sure?” he yelled. They were not. One by one the divers voted to abort their mission and return to port. Then the lone woman among them, in her thirties, stood up. I’ll call her Freya. “Let me go alone, I’ll finish quickly,” she said. Freya’s buddy went into the water first and rigged the bomb, a makeshift device fashioned from a diver’s breathing tank. “This will be fun,” Freya called to him. Then she plunged. Freya — whose name, like those of her fellow saboteurs, has been withheld for security reasons — was born in Kyiv in the mid-1980s and raised mainly by her mother. By the time she finished high school she spoke some English and Spanish, and she chose a university course that would allow her to travel. (via The Times)
Scientists say they have found a way to make quantum time run backwards

Scientists have developed a new way to control quantum systems that can make their behavior appear more consistent with time moving backward rather than forward. The research, published in Physical Review X, introduces quantum control protocols that reshape a system’s “arrow of time,” the concept that time naturally moves in only one direction. The approach could eventually support new methods for extracting energy from quantum systems and preparing quantum states. A quantum system, such as a group of qubits, follows the rules of quantum mechanics rather than classical physics. Using the newly developed control protocols, researchers can suppress the usual emergence of the arrow of time or even reverse its apparent direction, making quantum processes look as though they are unfolding backward. As a demonstration of the technique, the team also created a measurement engine that can harvest energy from the act of making quantum measurements. (via Science Daily)
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