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Sixty-six million years ago, a paleontologist brushes dust from a hollow bone [pause] no thicker than her thumb. Its walls, paper-thin, built for something impossible: powered flight at a scale the world had never seen. [pause] Then, the asteroid hit. The impact vaporized rock, ignited forests, and choked the skies with ash. When the dust finally settled, the giants were gone. But in their absence [pause] something else took over. Creatures so successful, so diverse, they rewrote the rules of the sky itself. Yet today [emphasis] almost no one knows their story.

• Discovery and Historical Background
• Scientific Analysis and Characteristics
• Behavioral and Ecological Details
• Broader Implications and Mysteries
• Reflective Conclusion and Call-to-Action