We Have Been Lead Poisoning Ourselves For 2000 Years, Glacier Ice Shows

We Have Been Lead Poisoning Ourselves For 2000 Years, Glacier Ice Shows
.
The Black Death, when people were too busy dying to mine for lead, was the only time period when lead in the air dropped back to its natural, undetectable levels.
.
Fecha: July 10, 2017 at 08:00AM
via Digg Health: http://ift.tt/2tFuFHb

Visita mis Blogs:

El Mundo de las Princesas Muñecas y Peluches: http://ift.tt/2fU9kRQ, El Mundo del Cine: http://ift.tt/2gPvTvM, Entretenimientos y diversiones: http://ift.tt/2gPw1Lz, Sucesos histórias y documentales: http://ift.tt/2gyPJe2, Humor Mascotas y Diversiones: http://ift.tt/2gNMpdm, Curiosidades y Entretenimientos: http://ift.tt/2fUeKwt, Competencias y deportes: http://ift.tt/2fLph1S, Paisajes imagenes y lugares interesante: http://ift.tt/2h0lFsG