Residents, volunteers and Florida officials set up flowers at a makeshift memorial dedicated to the victims of the collapsed 12-story beachside apartment building in Miami. "I’m not going to give up hope," says a friend of two missing victims as the rescue operation carries on.

The search continues for the missing tourist vessel with five people on board, at depths of up to 4,000 meters. How do submersibles deal with the pressures of the deep sea — and how deep can they go?

A Canadian military search plane has detected sounds they think may be coming from a submersible that disappeared while taking people down to the wreck of the Titanic, the US Coast Guard said in a statement on Wednesday.

With time running out, rescuers are making a last-ditch effort to locate a submersible that went missing on its way to the Titanic wreckage site. The rescuers fear oxygen on board the tiny vessel is close to exhausted.

The psychological impact of the destruction starts to weigh heavily on Moroccans as the death toll from the country’s devastating earthquake tops 2,800. Also, Libya calls for international help after authorities say that extreme flooding around the city of Derna has cost at least 2000 lives. And the African Union kicks off the week as the newest member of the G20.