Researchers in Antarctica have been keeping watch on the infamous ozone hole over that continent for several decades. The Montreal Protocol on Substances that Deplete the Ozone Layer was a multinational agreement signed in 1987 designed to reduce the production and consumption of ozone depleting substances that enter the atmosphere. It has been amended in various ways on many occasions over the subsequent years.
A new global analysis of seafood has found that fish populations in all the oceans of the world are contaminated with industrial and agricultural pollutants, which are collectively known as persistent organic pollutants or POPs.
