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As #advent and #ChristmasCountdown started to trend on social media sites on 1 December, we asked what was behind door one.
Scientists set out to drill into the Indian Ocean floor into the Earth's crust. Comment here.
A hack on children's toy company Vtech includes pictures of children and chat logs, according to reports.
Rolling updates of political developments on the Syria debate and vote. Add your comment.
US President Barack Obama says the key UN climate conference in Paris could be a "turning point" in global efforts to limit future temperature rises.
We are hearing from more than 120 debates around the world and live at the BBC's headquarters on what women think about pressures relating to image, relationship and leadership.