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Helicopter without pilots – level 3
16-02-2022 15:00
A Black Hawk helicopter flew for the first time...Looking for alien life – level 3
22-04-2016 15:00
“In your estimation, what’s the probability of finding intelligent...Looking for alien life – level 2
22-04-2016 15:00
Physicist Stephen Hawking announced plans to look for alien...Looking for alien life – level 1
22-04-2016 15:00
Stephen Hawking is a physicist. He talks about his...Man tries “walking” to Bermuda – level 3
15-10-2014 15:00
This video footage shows the moment a man who...
