Sam Altman-backed fusion startup Helion in talks to sell power to OpenAI |

OpenAI CEO Sam Altman is stepping down as board chair of the Helion — the fusion startup he backs — amid reported talks between the…

Fusion startup Helion hits blistering temps as it races toward 2028 deadline |

Fusion energy startup Helion announced Friday that it has hit a key milestone in its quest for fusion power. Plasmas inside the company’s Polaris prototype…