Joe Biden has acknowledged that toxic military burn pits could have been a 'significant' factor that drove his son to an early death from terminal brain cancer.
Beau Biden, who was 46 when he died in 2015, served in Iraq at two locations which commonly burned waste in open pits, using jet fuel to speed up the process.
Now, after years of studies suggesting links between cancer and burn pits, Beau's father Joe has made his first public comments on the matter, saying he was 'stunned' by a book which tracked his son's exposure to the carcinogenic fumes.
'[T]hat stunned me. I didn't know that,' Biden said in an interview with PBS News Hour on Wednesday.