  Investigations of strain correlations at the glass transition reveal
unexpected phenomena. The shear strain fluctuations show an Eshelby-strain
pattern ($\,\sim \cos{(4\theta)}/r^2\,$), characteristic for elastic response,
even in liquids at long times [1]. We address this using a mode-coupling theory
for the strain fluctuations in supercooled liquids and data from both, video
microscopy of a two-dimensional colloidal glass former and simulations of
Brownian hard disks. We show that long-ranged and long-lived strain-signatures
follow a scaling law valid close to the glass transition. For large enough
viscosities, the Eshelby-strain pattern is visible even on time scales longer
than the structural relaxation time $\tau$ and after the shear modulus has
relaxed to zero.
