What's next in the search for the imploded submersible?

Missing Titanic sub search in critical phase amid fears over oxygen levels

These 5 vessels are key to the search for the Titan submersible

Oxygen is running out as the search for the Titanic submersible is approaching a critical juncture

Missing Titanic submersible: The health risks facing the crew

Explorer's harrowing experience of being trapped at Titanic stern in 2000

Banging sounds were detected during the search for the missing Titanic submersible, a US memo says as oxygen supplies dwindle and the search intensifies

Titanic tourist submersible: Huge effort to find vessel as air supply dwindles

What we know about the missing Titanic-exploring submersible

Search efforts for actor Julian Sands, who went missing while hiking in January, continue in California

Mapping the search for Colombia's plane crash children

Coffee research group progresses on naturally decaffeinated varieties