  Using the Kepler K2 data, we studied the flare-activity of young K-and
M-stars in the Upper Sco region and found that they have 10000 to 80000 times
as many super-flares with E> 5E34 erg than solar like stars. The power-law
index for flares is $N/dE~E^-1.2 for K stars, N/dE~E^-1.4 for early M-star and
dN/dE~E^-1.3 for late M stars, which is about the same as that of the Sun. We
also observed the active M-star AD Leo spectroscopy for 222 hours, detected 22
flares but no coronal mass ejections.
