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\begin{document}
\title{COSMIC STAR FORMATION HISTORY}
\author{Piero Madau\\
\\
Space Telescope Science Institute\\
\\
3700 San Martin Drive\\
\\
Baltimore, MD 21218}

\pub{{\em the proceedings of}\\
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Star Formation, Near and Far,\\
~\\
{\em 7th Annual Astrophysics Conference in Maryland, October 1996\\
~\\
eds.\ S.~S.\ Holt and L.~G.\ Mundy}}

\maketitle

\abstract{I review some recent progress made in our understanding of
galaxy evolution and the cosmic history of star formation.  Like
bookends, the results obtained from deep ground-based spectroscopy and
from the Hubble Deep Field imaging survey put brackets around the
intermediate redshift interval, $1<z<2$, where starbirth probably peaked
at a rate 10 times higher than today.  The steady decline observed since
$z\sim1$ is largely associated with late-type galaxies.  At $z\apgt2.5$,
the Lyman-break selected objects may represent the precursors of
present-day spheroids, but appear, on average, quite underluminous
relative to the expectations of the standard early-and-rapidly forming
picture for spheroidal systems.  The observed ultraviolet light density
accounts for the bulk of the metals seen today in ``normal'' massive
galaxies.}

\end{document}