There is no direct evidence for neutrino mass from any laboratory
experiment. Nevertheless, there are strong hints from theory,
astrophysics, and cosmology that the neutrinos may have small masses. It
has long been known that the observed high energy solar neutrinos produced
in 
decays are suppressed by a factor of two to three compared to
expectations of the standard solar model. This by itself could be
accounted for by astrophysical or nuclear physics effects. However, there
are now four experiments of three types, which are sensitive to different
parts of the spectrum. By comparing the experiments it is possible to
infer that most of the suppression is in the middle of the spectrum,
associated with the 
line and the lower energy part of the 
\
spectrum. This is inconsistent with any known astrophysical or
nuclear physics explanation, and strongly suggests new neutrino properties,
such as MSW matter-enhanced neutrino oscillations. This conclusion can be
reached by using any two of the three types of existing experiments.
Future experiments will yield considerable new
information. By searching for spectral distortions,
day/night effects, and anomalous ratios of neutral current to charged
current events it should be possible to either confirm or falsify the need
for neutrino oscillations, independent of astrophysical uncertainties.