Radionuclides and heavy metals easily sorb onto colloids suspended in water. In 2016 Shearwater funded a rebreather sorb absorption research study by Harvey and colleagues. Sorbian Americans or Wendish Americans are Americans of Sorb/Wend descent. The Sorb ethnic group have long revered him. The sorb tree is cited in the Babylonian Talmud, Tractate Ketubot page 79a. Metals, however, tend to sorb through electrostatic attraction or surface complexation reactions. A legacy of this period is the Sorb population in Saxony.