The retreat of Nigardsbreen, an outlet glacier from the ice-cap Jostedalsbreen in south-central Norway, from its largest extent during the Little Ice Age, uncovered a proglacial lake during 1936-1967.

The Yellow River, China's second-longest river, transports more sediment than any major river in the world. Centuries of silt accumulation have diminished reservoir capacity and elevated its riverbed, ...

Temperature-controlled seawater columns were used to investigate settling rates of Ditylum brightwelli grown on light-dark schedules. Ficoll density gradient centrifugation was used to examine the ...