The British weren’t alone in their hunt. Chileans, New Zealanders, and South Africans, among others, were also scrambling to source this strategic substance. A few months after the Pearl Harbor attack, the U.S. War Production Board restricted American civilian use of agar in jellies, desserts, and laxatives so that the military could source a larger supply; it considered agar a “critical war material” alongside copper, nickel, and rubber.1 Only Nazi Germany could rest easy, relying on stocks from its ally Japan, where agar seaweed grew in abundance, shipped through the Indian Ocean by submarine.2
4.5 1944. 队列中可以看到的人数
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Цены на нефть взлетели до максимума за полгода17:55
国家加强原子能产业发展统筹规划，合理安排原子能产业整体布局。
Nature, Published online: 25 February 2026; doi:10.1038/d41586-026-00599-5