In the US, the Nasdaq and the S&P both closed down 0.5% after having tumbled earlier. The Dow Jones finished down 0.3%, having lost almost 1.8% earlier in the day.
One witness to the accident said it was a "miracle" there were any survivors.
"If we do not start talking about the threats facing nature the inspiration behind so much of our music, poetry and literature may go silent," the Royal Society for the Protection of Birds said.
The UK Foreign and Commonwealth Office has advised people to avoid travelling to Sri Lanka unless absolutely necessary as it monitors the "evolving security situation" following the attacks on 21 April.
A double from Raheem Sterling and goals from Sergio Agüero and Bernardo Silva were not enough to keep Manchester City's hopes of a remarkable four-trophy season alive.
The work was undertaken by two researchers at the University of California, Santa Barbara, and sheds new light on the environmental impact of plastic.
An investigation into the cause of the fire is already underway as the French President promises to restore the iconic cathedral.
The Alibaba Founder and Chief Executive has ruffled feathers with his support for China's '996' working culture.
The pioneering work could open up exciting new frontiers in biotechnology and 3D printing.