Laboratory experiments are reviewed which continue to describe novel proper
ties of three-dimensional (3D) vortices in Electron MHD (EMHD) plasmas. The
se include the collision of vortices which produces no nonlinear interactio
n since their electromagnetic fields are force-free (J x B+ neE similar or
equal to 0). Nonlinearities arise when the vortex field exceeds the backgro
und magnetic held and produces magnetic null points where EMHD breaks down.
Dc magnetic fields are produced by vortices of alternating polarities. Mag
netic reconnection at 3D null points changes the field topology on the fast
whistler time scale. In a high-beta plasma (beta > 1) pressure-gradient dr
iven instabilities near the lower hybrid frequency are observed to form elo
ngated magnetic vortices (flux ropes) coupled to flute-like density striati
ons.