Israel has developed some unique innovative methods for finding deadly unexploded landmines (see here). Now, Hebrew University of Jerusalem researchers have engineered a strain of E. coli bacteria that, a few hours after scattering over a minefield, will glow brightly if near TNT.

https://unitedwithisrael.org/israeli-scientists-use-mutant-bacteria-to-find-and-neutralize-landmines/