Titanic tourist submersible goes missing

US coastguards have launched a search and rescue operation after a submersible used to take tourists to view the wreck of the Titanic went missing in the Atlantic Ocean. We get an update from our correspondent.

China and the United States have agreed they must improve bilateral relations but a trip to Beijing by the US Secretary of State has produced few tangible results. Our correspondent in China explains.

We continue to hear conversations about air pollution in big cities around the world. Three mothers - in London, New York and New Delhi - discuss the devastating effects of pollution on their children and their campaigns to improve air quality.

Two women talk about their decison to freeze eggs to give them option to have children later in life.

(Photo: Titanic bow is seen during a dive at the resting place of the Titanic's wreck, July, 1986. Credit: WHOI Archives/Woods Hole Oceanographic Institution/Handout via REUTERS)