Venice's Grand Canal turns bright green due to fluorescein

The spectacular transformation of a stretch of Venice's Grand Canal to fluorescent green was due to fluorescein, a non-toxic substance used for testing wastewater networks, local authorities said on Monday.

Possible antidote discovered for deadliest mushroom: study

Researchers said on Tuesday that an already widely used medical dye reduces the poisonous effects of death cap mushrooms in mice, raising hopes of the first targeted antidote for the world's deadliest mushroom.

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