There are fears that another Ice Age is about to hit Silicon Valley because of the implosion of its unicorns — start-ups valued at more than one billion dollars. By one estimate there were 229 such companies in January of this year. Their valuations are dropping precipitously because they were overpriced and overhyped. The fear is that venture capital will dry up and hurt the innovation ecosystem.
Image: Silicon Valley’s “unicorns” may seem like they’re in trouble. (Justin Perry/CHP Madera/AP)