Rosanne

An international team of scientists has sequenced the complete genome of the woolly mammoth. Led by the Swedish Museum of Natural History in Stockholm, the work opens the door to recreate the huge herbivore, which last roamed the Earth 4,000 years ago. VOA’s Rosanne Skirble considers the science of de-extinction and its place on the planet.

This is the fourth piece in a five-part series on the Potomac River, the waterway in the eastern United States that flows through four U.S. States and metropolitan Washington DC into the Chesapeake Bay, the largest estuary in North America. In a canoe trip down the river VOA's Rosanne Skirble explores the natural riches of the Potomac and the struggle to protect the land and water resources of the river in the face of population growth, sprawling development and pollution.

In a sojourn by boat on the Potomac, VOA's Rosanne Skirble stops for a history lesson and to witness efforts to recover a bird that has been absent from the riverscape for more than fifty years.