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WS More or Less: Sperm - Are we going extinct?
How much of a problem is falling sperm count?
Unlock the history and truth behind the data with The OU
Explore how numbers shape, and sometimes mislead us, with The Open University.
When can you trust statistics?
BBC Ideas discovers three easy ways to help make sense of statistics.
Podcast
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More or Less
Tim Harford explains the numbers and statistics used in everyday life.
