WhoWhatWhy on MSN2 天
From Sewage to Swimming in ‘Blue Gold’: How Switzerland Transformed Rivers
The author writes, “In the 1960s, Switzerland had among the dirtiest water in Europe, blighted by mats of algae, mountains of ...
Business Insider6 年
Why some Koi fish can be worth millions of dollars
For example, there are koi with light blue spots, ones with large red patches on their backs, or all-metallic gold. But the most winning fish often just boil down to these three varieties.