The motivation and basic properties of the conjectured
correspondence between supergravity and E10 will be reviewed. Starting
from the cosmological billiards picture a D=1 sigma model based on an
E10 coset was proposed by Damour, Henneaux and Nicolai to be an
equivalent description of the D=11 supergravity dynamics. I will present
old and new evidence for this conjecture and demonstrate how to use it
to construct cosmological solutions.