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Caltech
caltech.edu > about > news > measuring-local-well-being-from-space

Measuring Local Well-Being from Space

2+ hour, 53+ min ago  (802+ words) Measuring Local Well-Being from Space'Caltech Measuring Local Well-Being from Space Since 1990, the United Nations (UN) has used the Human Development Index (HDI) to assess the development of a country using indicators of well-being and quality of life gathered via census…...

Caltech
caltech.edu > about > news > ancient-zircon-crystals-provide-a-window-into-early-earth-history

Ancient Zircon Crystals Provide a Window into Early Earth History

2+ day, 6+ hour ago  (648+ words) Ancient Zircon Crystals Provide a Window into Early Earth History'Caltech Ancient Zircon Crystals Provide a Window into Early Earth History There are many open questions about how our planet formed 4.55 billion years ago: When did plate tectonics start? When did…...