Since 1998, Harvard University wraps marble statues on its campus with waterproof covers every winter. Why?

to protect from frost
to protect from birds
to protect from acid rains
to protect from graffiti makers
The eastern third of the United States is sig­nif­i­cant­ly impacted by acid rain. Acids in the rain react with the calcium com­pounds in the stones like lime­stone or marble to create gypsum, which then flakes off.

Answers distribution

to protect from frost
to protect from birds
to protect from acid rains
to protect from graffiti makers
answers
flagFinland
1%
0%
98%
0%
90
flagSpain
4%
2%
91%
2%
47
flagItaly
8%
2%
89%
0%
95
flagthe Netherlands
6%
5%
82%
6%
98
flagthe United Arab Emirates
6%
4%
82%
8%
50
flagPakistan
10%
7%
76%
2%
38
flagthe United Kingdom
12%
6%
75%
4%
701
flagIndia
18%
3%
71%
3%
301
flagGermany
14%
8%
71%
4%
285
flagthe United States
19%
3%
70%
3%
834
flagNorway
12%
8%
70%
8%
48
flagRepublic of Ireland
21%
3%
68%
6%
61
flagPoland
18%
7%
67%
5%
22154
flagAustralia
12%
7%
66%
10%
39
flagCanada
19%
8%
65%
6%
46
flagFrance
19%
8%
64%
5%
56
flagUkraine
22%
13%
55%
6%
45
flagthe Philippines
34%
0%
53%
9%
41
flagRussia
10%
10%
53%
23%
39
flagUnknown
27%
10%
52%
9%
1246

Gender

men65%
women72%
to protect from frost
19%
17%
to protect from birds
8%
5%
to protect from acid rains
65%
72%
to protect from graffiti makers
6%
4%

Details

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