Tundra Swan

By Tom Pelton

Published January 28, 2016 at 12:00 AM EST

The epic journey of tundra swans from Canada and the northern U.S. states to Maryland and Virginia is one of the most beautiful things you can see and hear in the Chesapeake region's winters. But the arctic angels are visiting less and less often, because water pollution and disease are destroying their food supply of underwater grasses and shellfish.

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Tom Pelton

Tom Pelton, a national award-winning environmental journalist, has hosted "The Environment in Focus" since 2007. He also works as director of communications for the Environmental Integrity Project, a non-profit organization dedicated to holding polluters and governments accountable to protect public health. From 1997 until 2008, he was a journalist for The Baltimore Sun, where he was twice named one of the best environmental reporters in America by the Society of Environmental Journalists.

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