De-extinction, the science of resurrecting extinct species, is progressing in leaps and bounds. Here are six creatures that researchers could bring back to life — and one they've already revived.

Peter Wohlleben, a German forester and author, has a rare understanding of the inner life of trees ... Simard explains her frustrations with Western science. “We don’t ask good questions ...

The science of life in flowing water is well developed ... Reciprocal subsidies: Dynamic interdependence between terrestrial and aquatic food webs. Proceedings of the National Academy of Sciences ...