Canadian researchers have found the chemicals used to replace the banned ones are creating issues of their own.

The data reinforces a watchdog report from 2018 that claimed at least 18 companies in China were using the chemical to make foam insulation.

A United Nations-backed report suggests the Earth's protective ozone layer is slowly recovering, due to lower concentrations of harmful greenhouse gases.

Chinese foam-makers appear to be the “mystery” polluters behind the use of a banned, ozone-depleting chemical, an environmental group says.

A mystery polluter is producing a banned chemical that destroys the ozone layer, although scientists aren't sure where it's coming from or who is responsible.

There’s concrete proof that the hole in the ozone hole is recovering, NASA scientists say.

The Montreal Protocol was an international agreement signed on Sept. 16, 1987.

New research has found four new gases in the atmosphere that could potentially contribute to the depletion of the ozone layer -- and their source is unknown.