Think of an idealized chlorophyll bio-sensor which is responsive to light and is bio-degradable.

Or a nitrogen fixing bacteria culture sensor that is responsive to nitrogen in the environment.

 

These simple bio-sensors cause no environmental damage whatsoever and simply extend nature's bounty in the lab environment.

 

How close are we to achieving these?

 

Thanks in advance

I am not sure what the things you propose would be good for (or maybe you have a different idea what a biosensor is and being used for), as easier tools exist for these purposes. There are biosensors in development e.g. for certain pollutants. But their use is still somewhat tricky as they require live bacteria or in some cases on intact proteins. Field use is not impossible but often more error prone than alternatives, should they exist.

There are also plants. Some of them will even change color in response. Assorted animal species could also work depending on what you want.

 

Most sensors aren't particularly impacting, mainly just so they can continue to act as a sensor and not for environmental reasons. Real benefit would be for dual function uses. Ornamental or food crops that tell you when they are having problems or that something is wrong in your (shared) environment.

Edited January 30, 201411 yr by Endy0816

Well my nose is a biosensor and I am pretty sure it biodegradable, though Im trying to postpone a final test of that.

How about skin off your nose?