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- Study on Global Ageing and Adult Health, a study run by the World Health Organization
- Serial analysis of gene expression, molecular biology technique for measuring mRNA levels
- Sage writing, form of literary non-fiction popular in the Victorian era
- Sage Hill School, college-preparatory school in California
- SAGE (Soviet–American Gallium Experiment), a radiochemical experiment in solar neutrino physics
- The Sage School, a suburban private school located in Foxboro, MA serving children grades Pre-K-8
- Russell Sage College, a private women's college in Troy, NY
- Stratospheric Aerosol and Gas Experiment, satellites used to study the chemical composition of earth's atmosphere
- One of the 7 Oceans in Yohoho! Puzzle Pirates
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