Can geoengineering put the freeze on global warming?

Scientists call it "geoengineering," but in plain speak, it means things like this: blasting tons of sulfate particles into the sky to reflect sunlight away from Earth; filling the ocean with iron filings to grow plankton ...

Marriage patterns drive fertility decline

Researchers at the University of Sheffield have applied an evolutionary 'use it or lose it' principle when studying past marriage patterns, to show that marriage can influence the evolution of age-patterns of fertility.

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