Sudden cold can be the biggest threat, especially after a warm period.

VOA: special.2010.01.12

The interventions can be as simple as keeping the newborn warm.

VOA: standard.2010.05.11

On a warm summer day, when he usually would not be fishing - and on a part of the Illinois River where commercial fishing is normally illegal - Isaak and his fellow fisherman are casting their nets to drive the Asian Carp out of the water.

VOA: standard.2010.07.19