Photograph: Harry Kikstra/Getty ImagesAnd then came a revolutionary new research method: light detection and ranging (Lidar). Using a laser scanner attached to an aircraft, we carpet the terrain below us with pulses of lasers, collecting billions of points. For more information you can review our Terms of Service and Cookie Policy. For more information you can review our Terms of Service and Cookie Policy. Get the Guardians award-winning long reads sent direct to you every Saturday morningOverhauling these stereotypes has been difficult.
It was easy to identify people using aircraft.
( z0 easy :ARG1 ( z1 identify :ARG1 ( z2 person :ARG0-of ( z3 use :ARG1 ( z4 aircraft ) ) ) ) )
(z0 / easy-05
    :ARG1 (z1 / identify-01
              :ARG1 (z2 / person
                        :ARG0-of (z3 / use-01
                                     :ARG1 (z4 / aircraft)))))
It was easy to identify people using aircraft .
z0 :ARG1 z1
z1 :ARG1 z2
z2 :ARG0-of z3
z3 :ARG1 z4