Whereas sampling surface water in freshwater systems provides contemporaneous abundance estimates, sediment cores from those same systems tell you about present and past biodiversity. (molecularecologist.com)
The experiment is based on atomic force microscopy where sample surfaces are scanned with the apex of a needle - like probe. (sciencedaily.com)
«We managed to sample the surface structure of the projectile on - the - fly, achieving micrometer accuracy,» Professor Koos comments, «To this end, we recorded 100 million distance values per second, corresponding to the fastest distance measurement so far demonstrated.» (sciencedaily.com)