Anthropic raised $65 billion in new fund-raising that put its value at $900 billion, ahead of OpenAI’s last valuation of $730 billion, as the companies duel for A.I. dominance.

The billionaire’s new roots in Argentina are said to be partly motivated by concerns about the future of the United States and shared beliefs with Argentina’s right-wing leader.

The biggest episodes of the past have altered the course of human events, according to researchers. An emerging one is drawing historic comparisons.

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The dream of clean hydrogen has tantalized energy experts for years, but producing it has been tough. Many start-ups think the answer could lie beneath our feet.

A House transportation bill introduced this week would require owners of electric cars to pay $130 to cover the cost of road repairs.

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