Observations of Efimov resonances in optically trapped gases of ultracold cesium. The panel on the left-hand side shows experimental results  on atomic three-body recombination, where a prominent triatomic Efimov resonance shows up for ; here loss is expressed in terms of a recombination length . The filled circles represent measurements taken at , while the other data have been taken between and . The panel on the right-hand side displays the two-body loss rate coefficient measured for inelastic atom-dimer collisions  at two different temperatures, (open triangles) and (filled squares). Here a prominent atom-dimer Efimov resonance shows up for . The solid lines represent fits based on universal effective-field theory [28, 27].