<p>➀ A startup introduces electromagnetic field signaling technology for underwater IoT monitoring; </p><p>➁ Huawei's AI server reportedly outperforms Nvidia's most powerful model, highlighting challenges to U.S. tech export restrictions; </p><p>➂ Cree launches single-die power LEDs with circular emitters for high-intensity lighting, and Airbus-developed Biomass satellite prepares to map Earth's forests in 3D.</p>