Interesting Engineering on MSN2 天
Scientists discover a strange signal from 10 million years ago on ocean bed
Scientists have long sought reliable methods to date ancient geological events, but a surprising find in deep-sea samples may ...
来自MSN27 天
Rockfall frequency from French mountains has doubled since Little Ice Age
to measure concentrations of the isotope beryllium-10 (10 Be) which reflects the duration of exposure of rock fragments to cosmic rays, indicating the time the rock remained stationary before falling.