The CALorimetric Electron Telescope (CALET) is an experiment installed on the International
Space Station designed to carry out precision measurements of high energy cosmic-rays (CR) with
the aim of investigating their origin, the mechanisms of acceleration and galactic propagation,
and the presence of possible nearby astrophysical CR sources. The instrument combines a
scintillator hodoscope for charge identification, thin imaging scintillating fiber calorimeter for
particle tracking and complementary charge measurement, and total absorption PWO calorimeter
for energy measurement. CALET is able to obtain precise measurements of the fluxes of CR
electrons and γ rays up to TeV region, the energy spectra of CR nuclei from proton to nickel
from few tens of GeV to hundreds of TeV and secondary-to-primary ratios of elements up to
Z = 40. Here we present the highlights of CALET observation of light elements carried out
during the first seven years of operation, including a direct measurement of the electron+positron
spectrum from 11 GeV to 4.8 TeV and proton spectrum from 50 GeV to 60 TeV. Results on
the electromagnetic counterpart search for LIGO/Virgo gravitational wave events and gamma-ray
bursts are also summarized.