Sick young ants release a smell to tell worker ants to destroy them to protect the colony from infection, scientists said Tuesday, adding that queens do not seem to commit this act of self-sacrifice.
Kalaupapa National Historic Park on Molokaʻi’s remote north shore now offers visitors a deeply personal tour of what was once an isolated quarantine zone. On Molokaʻi, Kalaupapa National Historical ...
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