Helmets, Tea, District Heating
- Episode aired 2017
- TV-G
- 25m
![How Do They Do It? (2006)](https://m.media-amazon.com/images/M/MV5BYWM5MTkwYzYtNzNhYi00OTI2LWEyMGEtNWIwZGZmMjgwMGY2XkEyXkFqcGdeQXVyNTg3NDkzMzM@._V1_QL75_UX190_CR0,2,190,281_.jpg)
How do they harvest and treat the world's most expensive tea? Plus, how does the Siekierki power plant of Warsaw, Poland heat half the city's homes?How do they harvest and treat the world's most expensive tea? Plus, how does the Siekierki power plant of Warsaw, Poland heat half the city's homes?How do they harvest and treat the world's most expensive tea? Plus, how does the Siekierki power plant of Warsaw, Poland heat half the city's homes?