Environment
How primary energy is measured has changed across our charts
The Energy Institute no longer uses the substitution method to estimate primary energy. Here’s why that matters for our charts on energy.
Source: OWIDRead →
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Society
How family work arrangements have changed over time
The work arrangements of moms and dads who are married or living together have changed considerably in recent decades. As of 2025, just over half (52%) of different-sex couples with children under 18 consist of two full-time working parents. This is up from 46% a decade ago and…
Source: Pew ResearchRead →