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Gus, a nearly complete 38 foot Tyrannosaurus rex from South Dakota, goes to auction at Sotheby's Tuesday with bids expected to top $30 million.
CU Boulder scientists found a python blood molecule that spikes 1,000-fold after meals and curbs appetite in mice, now the basis of a new startup.
A 454-gram Sahara meteorite carries pressure evidence of a Moon-sized protoplanet that vanished before Earth finished forming, a new study finds.
New 2025-2026 studies show Earth's solid iron inner core shifting shape, spinning unevenly, and hiding a distinct 650-kilometer inner layer.