Abandoned Biochemistry Labs and Chemical Plants

It sounds like the beginning of a zombie movie, but labs are abandoned around the world and so are chemical plants and what is left behind? One can only wonder and some URBEX photographers dare to photograph and film - 

Russia

(abandoned Cold War biochemistry lab)

Belgium

(abandoned veterinarian lab)

Detroit

(abandoned chemical lab)

Germany
(abandoned chemical plant)

Houston
(abandoned chemical company)

India
(Chemical methane gas)