March 22, 2019, 2:27 p.m. by Bryan Nelson
Scientists say a massive volcanic event may be the cause.
Assignment Earth: Worm grunting
April 28, 2009, 10:21 a.m.
Video: Assignment Earth travels to Florida's Apalachicola National Forest to discover how a traditional method of luring earthworms from the ground has a solid basis in science.
J.R. Beaver unmasked
April 27, 2009, 4:31 p.m.
Sharing my summer as a state park mascot.