Four years has become the magic number for many graduate programmes in the United States and Europe. Eugene Russo explains the logic behind the maths.
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Eugene Russo is a freelance science writer in Takoma Park, Maryland.
- Eugene Russo
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Russo, E. The changing length of PhDs. Nature 431, 382–383 (2004). https://doi.org/10.1038/nj7006-382a
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DOI: https://doi.org/10.1038/nj7006-382a
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