A new large genome-scale study reveals that the ancestors of all present-day Native Americans arrived in the Americas as part of a single migration wave, no earlier than 23,000 ago.
The finding addresses the ongoing debate over when and how many times the ancestors of present-day Native Americans entered the New World from Siberia. Archaeological evidence logs modern humans in the Americas 15,000 years ago. Continue reading
SMU’s experimental physics group played a pivotal role in discovering the Higgs boson — the particle that proves the theory for which two scientists have received the 2013 Nobel Prize in Physics.
The Royal Swedish Academy of Sciences awarded the Nobel Prize on Oct. 8 to theorists Peter W. Higgs and François Englert to recognize their work developing the theory of what is now known as the Higgs field, which gives elementary particles mass. Continue reading
The study found that among youth who have symptoms of depression, the risk is most severe for those who have one or more of three risk factors, said psychologist Chrystyna D. Kouros, Southern Methodist University, Dallas, who led the study. Continue reading