  Young stars in the solar neighborhood serve as nearby probes of stellar
evolution and represent promising targets to directly image self-luminous giant
planets. We have carried out an all-sky search for late-type ($\approx$K7$-$M5)
stars within 100 pc selected primarily on the basis of activity indicators from
$GALEX$ and $ROSAT$. Approximately two thousand active and potentially young
stars are identified, over 600 of which we have followed up with low-resolution
optical spectroscopy and over 1000 with diffraction-limited imaging using
Robo-AO at the Palomar 1.5-m telescope. Strong lithium is present in 58 stars,
implying ages spanning $\approx$10$-$200 Myr. Most of these lithium-rich stars
are new or previously known members of young moving groups including TWA,
$\beta$ Pic, Tuc-Hor, Carina, Columba, Argus, AB Dor, Upper Centaurus Lupus,
and Lower Centaurus Crux; the rest appear to be young low-mass stars without
connections to established kinematic groups. Over 200 close binaries are
identified down to 0.2$''$ $-$ the vast majority of which are new $-$ and will
be valuable for dynamical mass measurements of young stars with continued orbit
monitoring in the future.
