Climates warm or cool. Rivers dry up or flood. Forests vanish. Populations collapse. Competitors arrive. The niche that once sustained a people shifts, evaporates, or moves.
Some groups adapt, reinvent themselves, and persist. Others cling to exhausted strategies and vanish. Archaeology is full of ruins left by those who failed to move with their niche.
History’s silence may hide even more who left no trace at all.
