Billion-dollar startup plans to bring the dodo back from the dead, and claims it can also revive the woolly mammoth

• Colossal Biosciences, a biotech company, says it will aim to revive the dodo using gene editing. 
• This is the latest attempt to revive extinct animals in the face of the biodiversity crisis. 
• Other projects include bringing back the Tasmanian wolf and the woolly mammoth. 

Billion-dollar startup Colossal Biosciences claims it has come a step closer to reviving the dodo, a flightless bird that has been extinct since the 17th century.