Science fiction has always needed materials that don't exist. How else do you explain a lightsaber, power a warp drive, or make a superhero's shield indestructible? Over a century of storytelling has ...

Hopscotch Air, a U.S. Part 135 carrier providing on-demand air taxi and regional air mobility services with a small fleet of Cirrus aircraft, has announced plans to raise $20 million by listing ...

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