Chinese researchers have developed a new-generation nuclear battery that far surpasses its predecessor and marks a major step in long-life power sources, according to the team.Northwest Normal University, in collaboration with Chinese tech firm Gansu Zhulong Technology, unveiled a carbon‑14 nuclear battery and silicon carbide (SiC) transducer on Monday, saying the equipment was developed without any foreign technology or parts.The Qianjiyuan Tianshu battery is a major upgrade from the team’s...