Comments by "Tim Murphy" (@timmurphy5541) on "Real Engineering" channel.

@huldu The sea is far bigger in area than the land - also suitable nodules are only in certain places. So its' going to be a choice of damage to x% of the land versus damage to < x% of the sea.
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Ammonia (as already mentioned by others) is interesting. I also wonder about algae-based biofuels.
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@huldu well, we depend on other things so we don't really want to destroy anything but we only have a choice of different evils and must weigh them against each other.
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