A perfectly preserved ancient tree fossil offered scientists an unprecedented view into a moment 42,000 years ago when the Earth’s magnetic field went haywire. The compelling 2021 study tells the ...
Living organisms share an ancestor called the last universal common ancestor, or LUCA. LUCA is estimated to have lived ...
A new study co-led by the Smithsonian’s Museum Conservation Institute and Harvard University reveals that 1.5–18 million-year-old mammalian fossils from Kenya contain proteins in their enamel that ...