Earth's early oceans may have been heavy on the salt

Yale scientists say Earth's ancient oceans likely were much saltier than they are today—a finding that may spice up our understanding of how life, atmosphere, and climate evolved on the planet.

Climate change 2021: There's no turning back now

Across a quarter century of UN climate conferences tasked with saving humanity from itself, one was deemed a chaotic failure (Copenhagen/2009), another a stunning success (Paris/2015), and the rest landed somewhere in between.

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