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NASA’s Aqua satellite and Global Precipitation Measurement mission, or GPM, satellites have been peering into what appears to be a somewhat lop-sided Hurricane Maria. The storm appears asymmetric because vertical wind shear is pushing clouds and showers to the eastern side of the storm.

On Sept. 27, NHC forecaster Daniel Brown noted, “Deep convection and banding has increased over the eastern and northeastern portion of the large circulation of Maria since yesterday.”

Nitrogen can present a dilemma for farmers and land managers.

De hecho, la ascensión de los vikingos no fue un acontecimiento repentino, sino que formó parte de un largo continuo de desarrollo humano en el norte de Escandinavia, cuyas largas e intrincadas costas marinas y archipiélagos condujeron al surgimiento de una cultura basada en la tierra, pero muy dependiente del mar. 

One June day in the year 793, men in ships landed on Lindisfarne, an island off eastern England occupied by a monastery. The men, apparently from the north, plundered treasures, overthrew altars and set fire to buildings. They killed some monks and carried others off in chains; others, they stripped naked and left behind to the mercies of the weather. The attack shocked European Christian society. They came to mark it as the official start of the Viking Age, when Norse raiders ranged as far as the southern Mediterranean and northern Asia, before seemingly fading out some 250 years later.

Vocal communication is central to the lives of many birds, which use sound to attract mates and defend territories.