The structure of the growth lines in the shell of the red abalone, Haliotis rufescens, has been characterized by X-ray diffraction analysis and by scanning and transmission electron microscopy. The ...

At more than 470 times the atmospheric concentration of CO₂, a humble soil bacterium does something extraordinary: it turns ...

Highlights of the five-night trip include seeing the cave’s own rainforest and a calcite wall called the Great Wall of ...