Educational Videos

Great on Forest fire detection & prediction.

Why not just use satellite imagry to detect forest fires, it's much easier and less expensive

If lightning strikes anywhere near the tree, the cmos electronics will be destroyed....

If you are creating a biochemical, ion-based DC current,  you are moving charge across electrodes that may produce a bi-product, such as a gas or a precipitate.   PH, of course is a relative scale for the degree of alkalinity or acidity.   The movement of charge is nature's attempt to stabilize/balance charge distribution. The low voltage is produced by a slow acid/base reaction.   In the case of platinum the electrodes are non-reactive, but just as putting dc current through water can create hydrogen and oxygen, there must be some sort of recombinant reaction in response to tapping out current.  Does anyone at MIT have any ideas as to what bi-products are being generated?

Fire lookouts detect quicker than satellites!

Cmon.. this is silly...  ok so you got a few microvolts out of the soil...  how is that going to run any kind or wireless device... so if you use Zigbee or Dust technology.. you are going to need a boatload of these things probably more then 4 per acre (to get a reliable link) and then each hop degrades... and Platinum and manpower isn't cheap to do all this.