The other workers stuck using transit are, of course, the men and women operating those subways, buses, trains, and street cars.

We developed algorithms to analyse the starlight filtered by this planet using transit spectroscopy, with data provided by the Hubble Space Telescope.

Last year, the number of people using transit fell in most of the biggest metro systems-andthat was an improvement over the year before.

Ridership typically correlates with gas prices, but this time around the number of people using transit continues to rise even as fuel prices fall.