In 1971, scientists moved just five pairs of Italian wall lizards onto a small Croatian island; 36 years later their descendants had larger heads, stronger bites and altered digestive tracts suited to eating far more vegetation than the original population
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