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Are Planes Safe – level 3
21-12-2020 15:00
Regulators, insurers, and experts are warning airlines to take...Killer’s Message – level 3
18-12-2020 15:00
The Australian mathematician, Samuel Blake, and two other cryptologists...Machine Makes Books Safe – level 1
15-12-2020 07:00
Libraries in Japan use special machines. The machines sterilize...Telescope Collapses – level 3
09-12-2020 15:00
The Arecibo Telescope was a 305-meter radio telescope that...