Double shells — an outer shell delivering energy inward and a high-density inner shell compressing the fuel — could help ...

Unlike the site in Utah, the Mongolian site has no datable volcanic deposits. As a result, the eggshell tests there yielded ...

A cutting-edge dating method turns fragile dinosaur eggshells into precision time machines—revealing exactly when these ancient giants nested, hatched, and vanished.

Scientists from Stellenbosch University and elsewhere have used advanced uranium-lead (U-Pb) dating and elemental mapping to measure trace amounts of uranium and lead inside the calcite of fossilized ...