  The NEWS-G collaboration is searching for light dark matter candidates using
a spherical proportional counter. Light gases, such as hydrogen, helium, and
neon, are used as targets, providing access in the 0.1-10 GeV mass range. First
results obtained with SEDINE, a 60 cm in diameter detector, in the Underground
Laboratory of Modane yielded a 90% confidence level upper limit of 4.4x 10^{37}
cm^2 on the nucleon-dark matter interaction cross-section for a candidate with
0.5 GeV mass. Recent developments in several aspects of the detector
instrumentation are presented, along with the construction of a new, 140 cm in
diameter, detector with new compact shielding.
