Typically, our customers don't push out our buses. And for their safety, we would just as soon they don't.

Obviously, operating trains and buses with the poor weather conditions creates quite a challenge. We've been getting lots of distress calls from bus drivers who are stuck. We have many tow trucks working to free buses. We are doing all we can to keep buses moving.

There is not any indication that this safety device is working one day and failing the next minute.

You don't just magically flip some evolutionary switch somewhere and transmute a quadruped into an upright-walking bipedal human.

If you were to go to the National Museum in Addis Ababa, you would walk into a huge room filled with literally tens of tons of fossils, and most of them would be elephants and rhinos and hippopotamus and monkeys and giraffes and antelopes and so on. Hominids are very rare in the landscape, and it's very rare to find them.

Normally, we are happy to find a fragment of jaw, a few isolated teeth, a bit of an arm, a bit of a skull. But to find associated body parts is extremely rare.