Though they likely are harmless, many view them as toxic in today's market.

FORBES: Scare Tactics

Though they are likely harmless, many view them as toxic in today's market.

FORBES: Scare Tactics

The single-celled organisms appeared to be harmless, though we were cautioned not to touch anything, to keep the windows shut, to wash our hands.

NEWYORKER: The Invasion from Outer Space