The bizarre magnetic forest rings of northern Ontario

Geoff sends us a post about "the 'strange phenomenon' of naturally-occurring 'forest rings,' or circles up to 2km in diameter only visible from the air, in northern Ontario. The rings are at least partially caused by electrochemical effects in the soil -- which are apparently strong enough to affect the local water table, such that 'the water is being held up against gravity,' as geochemist Stewart Hamilton discovered. This is 'beyond science fiction,' he gushed." (more…)