Research highlights the rising impact of synthetic chemicals on children's health, linking them to noncommunicable diseases ...
The pencil “lead” is actually a mixture of graphite and clay. More clay in the mixture makes the lead harder. A harder lead has a higher number. Pencils are numbered from 1-3 but most people use a ...
The recent lead contamination problem in Flint, Mich., was not the first time there has been a severe public health issue caused by a tainted water supply. As recently as February 2016, officials in ...