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2022 space exploration – level 1
02-01-2023 07:00
Many things happen in space exploration in 2022. NASA’s...2022 space exploration – level 2
02-01-2023 07:00
Many important events in space exploration happened in 2022....How Video Calling Started – level 1
29-12-2022 15:00
Video calling is a technology when you call somebody....How Video Calling Started – level 2
29-12-2022 15:00
In the late 1890s, people started to think that...How Video Calling Started – level 3
29-12-2022 15:00
Development of video calling started in the late 19th...People save a glacier – level 1
28-12-2022 15:00
Swedish scientists do an experiment. They put a cloth...