During the last glacial period, a vanished ocean current may have made the land bridge between Asia and the Americas into a place where humans could wait out the ice.Read More »Biogeosciences
A new model determines freshwater and dissolved organic carbon discharge to the Gulf of Alaska from one of the most geographically diverse but understudied regions on the planet.Read More »Climate Change
Modeling the U.S. energy system demonstrates several pathways to net-zero CO2 emissions by 2050. The pathway with the lowest cost, 0.2–1.2% of GDP, relies on >80% contribution of renewables. Read More »Biogeosciences
Muestras de campo provenientes de Alaska muestran cómo la luz solar y el hierro convierten el carbono del permafrost en dióxido de carbono. Los modelos climáticos ignoran este proceso.Read More »Biogeosciences
Un nuevo estudio muestra que las medusas y las salpas marinas no reciben el crédito que merecen por su papel en el ciclo del carbono en el océano.Read More »Biogeosciences
Despite increased photosynthetic activity at northern latitudes in recent decades, plant productivity in tropical zones suffers because of water limitations.Read More »Biogeosciences
Discussions around global trade are starting to consider the water it takes to produce exported goods. Some scientists argue that this approach should take a regional rather than global perspective.Read More »Hydrology, Cryosphere & Earth Surface
Researchers peer into precipitation partitioning—the process by which plants and the organic matter coating them help shape the hydrologic cycle.Read More »Biogeosciences
An overgrown channel between a lagoon and the ocean on the Puerto Rican island of Vieques created a backup of freshwater, disrupting the delicate balance of salinity in coastal mangrove forests.Read More »
