  The GOODS-North field centered around the historical Hubble Deep Field-North
provides one of the richest multiwavelength datasets compiled, spanning radio
to X-ray frequencies, for studying the formation and evolution of galaxies at
high redshift. In particular, the unprecedented sensitivity of the
Spitzer/GOODS 24 micron observations allows an unbiased measure of
dust-enshrouded star-formation and AGN activity in typical L* galaxies rather
than the extreme, hyperluminous galaxies which far-infrared surveys detect. We
consider a spectroscopically selected sample of 226 galaxies at z$>$1.5 of
which 135 are in the redshift range 1.5$<z<3$. Less than 1/4 of galaxies
considered here are detected at 24 microns. They primarily have red UV slopes
but consitute about only 20 percent of the red galaxies in this sample
indicating that the red UV colors of the majority of objects is due to an
evolved stellar population. Although 24 micron sources are sparse in number,
their combined energy output in the 1.5$<z<3$ range exceeds the combined UV
luminosity of the sample by a factor of about 30. We also find that AGN,
identified by their X-ray to infrared luminosity ratios, account for less than
10 percent of the sources considered and contribute less than 30 percent of the
total budget in this redshift range. The infrared luminous galaxies which are
increasingly being found at high-z appear to dominate the global energetics of
the Universe out to z~3 as has previously been predicted.
