Water bears, also known as tardigrades, can survive boiling, freezing, the vacuum of space and years of desiccation. Biologist Bob Goldstein, of the University of North Carolina Chapel Hill, describes water bears and explains why he studies them.
Music by Geoffrey Raines/Bardo Music
. Images/footage by Bob Goldstein, Willow Gabriel, Victoria Madden Anthony Flemming
, and Michel Verolet