How (and why) a billion-dollar startup plans to bring back the dodo

The last living dodo was seen on the island of Mauritius in 1662; soon it was extinct, largely the victim of the invasive species humans brought to the island. But the dodo may one day see a second life: Using its genome and that of its closest living relative, the genomics company Colossal plans to harness gene editing tools to bring the bird back from the dead.