We report the δ34S and δO(SO4) measured in gypsum, pyrite, and elemental sulfur through a 456-m thick sediment core from the center of the Dead Sea, representing the last ∼200 kyrs, as well as from the exposed glacial outcrops of the Masada M1 section located on the margins of the modern Dead Sea. The results are used to explore and quantify the evolution of sulfur microbial metabolism in the D...

We have measured the contribution of submillimeter and mid-infrared sources to the extragalactic background radiation at 70 and 160μm. Specifically, we have stacked flux in 70 and 160μm Spitzer Space Telescope (Spitzer) observations of the Canada-UK Deep Sub-millimeter Survey 14h field at the positions of 850μm sources detected by SCUBA and also 8 and 24μm sources detected by Spitzer. We find t...

Brown seaweeds are abundant in Portuguese coastline and represent an almost unexploited marine economic resource. One of the most common species, easily available for harvesting in the northwest coast, is Saccorhiza polyschides grows in the lowest shore and costal rocky reefs. It is almost exclusively used by local farmers as natural fertilizer, but contains a substantial amount of valuable com...