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First COVID-19 Vaccine – level 1
17-08-2020 07:00
Russia makes a COVID-19 vaccine. A vaccine is a...Boston Marathon Bomber – level 2
06-08-2020 07:00
On the 15th of April, 2013, the Tsarnaev brothers...World’s Biggest Reactor – level 3
04-08-2020 07:00
The world’s largest nuclear fusion reactor began its five-year...Green Card Lottery – level 3
28-07-2020 07:00
Every year, millions of people around the world apply...