A toxic chemical that pollutes groundwater originates high in Earth’s atmosphere, a scientific flight has revealed. Perchlorates, a group of chlorine-containing chemicals that can disrupt thyroid function, form on particles of smoke and organic material in the stratosphere, between 6 and 31 miles (10 to 50 kilometers) above the planet’s surface, according to a new study. Scientists already knew that …
Read More »Toxic chemicals that pollute groundwater are formed up in the stratosphere, surprise findings show
