Advocates of assisted suicide in Canada believe they may be close to a breakthrough in a Supreme Court case being heard in British Columbia.
Gloria Taylor, 63, who has a terminal neurological disease, is fighting for her right to decide how and when she will die. She has Lou Gehrig's Disease.
The hearing is expected to take until the end of the month to complete.
Anti-euthanasia groups fear losing the case and are already promising to appeal.
At the same time a study commissioned by Royal Society in Canada has called for euthanasia and assisted suicide to be decriminalised.
However, the ABC reports there is little appetite for the issue in Toronto.