Chicken Little was right, the sky is falling, and as this volume informs us at the rate of 40 × 106 kg per year globally. Most of this incoming material is interstellar dust (50–700 μm diameter), about 4% of which reaches the surface unaltered. Other dust particles and meteoroids melt or are ablated on atmospheric entry, scattering metal ions 85–120 km above the surface of the Earth. Both the ions and particles are rich in carbon and iron, adding to planetary inventories of these biologically significant elements. This edited volume presents technical summaries of what and how we know...

You do not currently have access to this article.