Empty axis-parallel boxes

We show that, for every set of $n$ points in the $d$-dimensional unit cube, there is an empty axis-parallel box of volume at least $Omega(d/n)$ as $ntoinfty$ and $d$ is fixed. In the opposite direction, we give a construction without an empty axis-parallel box of volume $O(d^2log d/n)$. These improve on the previous best bounds of $Omega(log d/n)$ and $O(2^{7d}/n)$ respectively.