Sensemaker: Why will HS2 spend £100 million on a bat tunnel?

 The high-speed rail project is now tens of millions of pounds in the red and an expensive bat tunnel is the latest major cost. With its future in doubt, how did it all go so wrong?Featuring Christian Wolmar, host of the podcast Calling All Stations - https://shorturl.at/KTypIWriter and producer: Eleanor BiggsPhotography: Jon JonesHost: Tomini BabsExecutive Producer: Rebecca Moore Hosted on Acast. See acast.com/privacy for more information.