A BBC team meets the Taliban, a group that clearly sees itself as Afghanistan's government-in-waiting.
If you were to gaze skyward in the late Cretaceous, you might catch a glimpse of surreal flying giants with wingspans that rival small planes. This supersized group of pterosaurs, known as azhdarchids, included species that measured 33 feet between wingtips, which made them the largest animals that ever took to the air. The extreme dimensions of azhdarchids raise tantalizing questions, such as how
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