medium

group

of

people

mature

adult

man

male

caucasian

child

girl

female

boy

teenager

black

animation

network

connection

teacher

student

using

laptop

school

education

technology

concept

loop

classroom

lesson

class

teaching

hdfootage

motion

lightning

strike

science

research

dark

blue

background

digital

numbers

web

elements

video

gradient

mesh

maps

the

world

broadcast

studio

tunnel

construction

learn