For the first time, Herschel allows us to make a census of star formation in the Galactic Plane.
I will present some of the first results from the HOBYS program.
In the Rosette, Herschel has revealed a clear temperature gradient running from the HII region interface into the cloud (Schneider et al., 2011), in addition to three massive prestellar detected by Motte et al. (2011).