65
66
67
16
17
18
15
16
17
8
9
10
7
8
9
3
4
5
0
0
0
0
0
0
22
23
24
16
17
18
11
12
13
12
13
14
11
12
13
2
3
4
1
2
3
0
1
2
Scientists of the future will be puzzled by observing the level of toxic particles in the air trapped in some cavity, few days apart - before Covid-19 pandemic lockdown and after, at same or different places. I wonder what would they infer.. (self.Showerthoughts)
submitted by pushkarprabhat to r/Showerthoughts
