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Former OceanGate Expeditions employee David Lochridge emailed another ex-associate of the company years ago with concerns about the potential failings of its Titan submersible and an ominous warning about its CEO, who was killed last month with four others when the vessel imploded on a dive in the North Atlantic. The New Yorker's Ben Taub, who obtained this report, joins CNN's Brianna Keilar to provide more details.

Here are four things you want to look out for when picking sunscreen, according to dermatologist Dr. Rita Linkner.

During a ride through Dakar, the Senegalese musician explains how his father influences his music and why it is difficult for artists from his country to get international exposure.

King Willem-Alexander apologizes for "horrors of slavery" and asks for forgiveness. CNN's Paula Newton discusses with Linda Nooitmeer from the National Institute for the Study of Dutch Slavery

CNN's Becky Anderson speaks with Emirati astronaut Sultan Al Neyadi while he's aboard the International Space Station.

Director Alex Winter and producer Gale Anne Hurd talk with Rick Damigella about the documentary on the video platform's effect on its viewers and society.

To chill or not to chill?

No matter which side of the Danube River you're on, Buda or Pest, the Hungarian capital comes alive this time of year.

Photographer Paul Ninson is opening one of Africa's largest photo libraries in Accra, Ghana, in attempt to preserve African culture through imagery.

Ikea carried out comprehensive analysis of its carbon footprint, finding that the little details matter.

Calling itself the "social media for supply chains," Sourcemap enables customers to chart every supplier it works with.

CNN's Anna Coren with the details

The City of God is one of Rio's most notorious favelas. Former caddy Marcelo Modesto is using his passion for golf to transform the lives of children who live there.

A study shows the travel sector needs to rethink if it's to meet emissions targets.

European airlines say they're ready to bounce back.

How an assassin's bullet cut short the life of a man who 'retained a great optimism' for America's destiny

Elon Musk causes confusion among Twitter users. Axios Media Reporter Sara Fischer joins Julia Chatterley.

7-time major champion Mats Wilander discusses Novak Djokovic's chances at a 5th straight Wimbledon triumph and other notable names with CNN World Sport's Amanda Davies

Sara Fischer explains how Twitter users are being hit with temporary limits on viewing Tweets

CNN's Dr. Sanjay Gupta explains that the popular sugar substitute aspartame is under new scrutiny by the WHO for possible links to cancer.