Slathering on sunscreen may protect your skin, but it's not healthy for the world's water supplies, or the aquatic life within them.

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Overexposure to the sun’s ultraviolet rays causes increased risk of skin cancers: this medical message has been widely embraced, but the law of unexpected consequences has kicked in with regard to the increased use of sunscreen.

Sejal Choski, the program director for Baykeeper of San Francisco, also wrote about this issue here.

Sunscreen