A biologist from Baylor University in Texas has discovered a unique way to determine changes in hormone and contaminant levels in baleen whales – through their ear wax. Stephen Trumble is a whale biologist who studied at UAF. He says museums have collected these earwax plugs for a century and the Smithsonian alone has more than 500. They are commonly used to determine a whales’ age – like tree rings.
But three years ago an environmental chemist suggested to Trumble the wax plugs were also like sediment cores. It was a moment of insight.
Lori Townsend is the news director and senior host for Alaska Public Media. You can send her news tips and program ideas for Talk of Alaska and Alaska Insight at ltownsend@alaskapublic.org or call 907-550-8452.
