In 1996, NOAA scientists pumped 2 dyes beneath Key Largo to learn where groundwater went; 18 days later, 2 bay-side wells showed it flowed toward the Atlantic
About a quarter of the Netherlands now sits below sea level, and the obvious explanation is that the sea rose. However, researchers who reconstructed the past thousand years of the Dutch coastal plain concluded the opposite — much of the land came down to meet the water