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

New research finds a hole in the ozone layer above Antarctica has continued to recover, leading to changes in atmospheric circulation.

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

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

Canada's producers of peas and lentils are preparing for the possibility that their largest market may soon shut down imports because of a purported problem with pests.

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.