The Department of Earth and Planetary Sciences is housed in Scott Rudolph Hall, between Compton and Whitaker Halls.
From Lambert Airport: follow signs for I-70 east, then I-170 south ("Clayton").
From I-64/US 40 eastbound: take the McCausland Ave. north exit.
You can also take the Metro between the airport and the nearby Skinker station.
Metrolink Map Schematic highway map Danforth Campus Maps