A new report has increased the urgency of searchers looking for a tourist sub that has not been heard from since Sunday.

One of the passengers aboard a submersible that went missing in a bid to explore the wreck of the Titanic posted online before the mission.

A journalist who was on the missing submersible Titan last year knows first-hand how things can go wrong deep below the surface.

"We are exploring and mobilizing all options to bring the crew back safely," the company said in a statement.

The most dangerous national park in the United States has been revealed as one of the most well-known areas in the country.

“We proved the world that we found the plane... we found the children,” said Manuel Ranoque, father of two of children that were missing.

Three men went missing after a building collapsed in Iowa on May 28, and one of their bodies was recovered on Saturday.

“When something like this happens here, and tragedy strikes, our responders immediately do their work and their job."

A teen was missing for days in a remote forest of Montana. The footage of his rescue is incredible. He is lucky to be alive.

A C-130 was hit as it landed on an evacuation mission in Sudan as Americans took a convoy out of the chaotic capital city.