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Suicide presents a real and often tragic puzzle for the family and friends of someone who has committed or attempted suicide. 'Why did they do it?' 'How could they do this?' 'Why did they not see there was help available?' For therapists and clinicians who want to help those who are vulnerable and their families, there are also puzzles that often seem unsolvable. What is it that causes someone to end his or her own life, or to harm themselves: is it down to a person's temperament, the biology of their genes, or to social conditions? What provides the best clue to a suicidal person's thoughts...

Oceans make up most of the surface of our blue planet. They may form just a sliver on the outside of the Earth, but they are very important, not only in hosting life, including the fish and other animals on which many humans depend, but in terms of their role in the Earth system, in regulating climate, and cycling nutrients. As climate change, pollution, and over-exploitation by humans puts this precious resource at risk, it is more important than ever that we understand and appreciate the nature and history of oceans. There is much we still do not know about the story of the Earth's oceans,...