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Americans don’t live very long – level 3
08-09-2022 15:00
In the 1960s, the average American’s life expectancy was...UN Secretary-General speaks about Pakistan floods – level 2
02-09-2022 07:00
Monsoon winds bring rain to Southern Asia every year,...Holes in Swiss Cheese – level 2
05-08-2022 15:00
After old stories about hungry mice, many random guesses,...Holes in Swiss Cheese – level 3
05-08-2022 15:00
A Swiss agricultural institute made a revelation of why...The Great Barrier Reef – level 2
22-07-2022 15:00
The Great Barrier Reef is the world’s largest coral...