In 1964 the American writer Rachel Carson, in her book Silent Spring, described how "destructive chemical products stay in the soil, get into the green grass or the fields planted with rice and wheat, spread with the days and accumulate with the months, getting into peoples bones and staying with them right up until they die."
正如一九六二年美國作家卡遜女士對毒物損害生態提出強烈質疑所寫的「寂靜的春天」一書形容：「禍害的化學品停留在土壤內，進入青草或種植稻麥的田野，日積月累，又進入人的骨骼，直到人死去仍帶著它。」