SpaceX will become a publicly traded company on Friday, in what is expected to be the highest-value stock listing in history.The BBC's Samira Hussain explains what it means...
Justin RowlattClimate EditorAFP via Getty ImagesRenewable energy overtook coal as the world's leading source of electricity in the first half of this year...
Many children, their eyes wide with shock, cling to the arms of rescuers after explosions tear through their neighbourhoods.
Some images are too horrific...