  I review latest results from AMS on electrons and positrons in primary cosmic
rays in the GeV to TeV energy range. Separate fluxes for electrons and
positrons as well as their sum are presented. Neither of the fluxes is
compatible with a simple power law. New data on the fraction of positrons in
the joint electron and positron flux are also presented, which extend the
energy range of our previous observation and increase its precision. The new
results show, for the first time, that above about 200 GeV the positron
fraction no longer exhibits an increase with energy. The results confirm that a
common new source of electrons and positrons exists.

High Energy Physics - Experiment;High Energy Astrophysical Phenomena;Instrumentation and Detectors