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According to data released Friday by the U.S. Geological Survey and partners, the three-year average of the total counts of southern sea otters was down from last year’s high, although it still exceeded the U.S. Fish and Wildlife Service’s delisting threshold for a second straight year.

In a step toward bridging the gap between fungal taxonomy and molecular ecology, scientists from several institutions including Los Alamos National Laboratory have characterized a sample of “mystery” fungus collected in North Carolina and found its home in the fungal tree of life.

A week after Hurricane Maria rolled through Puerto Rico, the island faces a public health crisis with no power and a growing shortage of drinking water and food.

New technological interventions are needed to save coral reefs under climate change.

Bone marrow contains hematopoetic stem cells, the precursors to every blood cell type. These cells spring into action following bone marrow transplants, bone marrow injury and during systemic infection, creating new blood cells, including immune cells, in a process known as hematopoiesis.