The elbow bump has replaced the handshake in many situations, including this greeting between Dutch Prime Minister Mark Rutte (right) and Dutch Minister for Medical Care Bruno Bruins in The Hague, Netherlands, on Tuesday. Remko de Waal/ANP/AFP via Getty Images hide caption
A Muslim woman who refused to shake hands on a job interview won her discrimination case in Sweden on Wednesday. suedhang/Getty Images/Image Source hide caption
Cuban President Raul Castro tries to lift up the arm of President Obama at the conclusion of their joint news conference in Havana, Cuba, on Monday. Ramon Espinosa/AP hide caption
One set of knuckles meets another. Both are equal in this greeting that expresses approval and triumph. Meredith Rizzo/NPR hide caption