Study: Taking Uber or Lyft costs society and environment more than driving yourself

Lyft car with trademark pink mustache (via Wikimedia) Using ride-hailing services like Uber and Lyft leads to higher levels of greenhouse gas emissions and traffic congestion than driving personal cars, according to a new study from researchers at Carnegie Mellon University. The problem is that ride-share drivers spend a lot of time "deadheading" (driving alone) without paying passengers onboard, the...