If a woman's husband disappears, she must remain in limbo, awaiting the facts of his absence. The talmud says, if a man drowns in a Yam Shayin lo sof, a sea that has no end (a very large one), then the Rabbis free her on the assumption that we have enough (if not 100%) proof that he died.
I don't want to add my own comments today, for this issue feels like a Sea of tears with no end, for the widow, for agunot of all types of cases, and for mesoravot get.
I do have to say the comments on this recent article intrigued me. While I disagreed with a few, overall I was glad to see a civil public debate on the topic.