A new simulation shows large amounts of hydrogen in our planet’s core. And, what scientists found in 290-million-year-old vomit.
Genetic research could speed the restoration of the American chestnut tree. Plus, "rewilding" small spaces with fast-growing miniforests.
Discover four key economic concepts: scarcity, supply and demand, costs and benefits, and incentives. Learn how they affect consumer choices and financial decisions.
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