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Ear wax from whales keeps record of ocean contaminants

from NPR

According to a study published recently, these columns of whales' ear wax contain a record of chemical pollution in the oceans. The study used the ear wax extracted from the carcass of a blue whale that washed ashore on a California beach back in 2007. Scientists at the Santa Barbara Museum of Natural History collected the wax from inside the skull of the dead whale and preserved it. more

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