Efforts to clone a 130-year-old giant sequoia planted by naturalist John Muir on his Martinez property have been successful.
Arborists are trying to clone a dying tree the naturalist brought to the Bay Area in the nineteenth century.
The College of Marin celebrated Earth Day in a very special way, by planting some of the rarest trees on the planet. They planted three clones of ancient coastal redwoods, cut down more than a century ago.
Scientists in Asia and South America say they are now producing human breast milk in cloned dairy cows.