Business

Chrysler, Ford and General Motors gained market share in the past couple years. Helped by Toyota's much-publicized recalls, the problems that Japanese carmakers faced after last year's earthquake and tsunami, and an improving reputation for the quality of American-made vehicles, Detroit's Big Three grabbed 47 percent of sales last year — up from 45.1 percent in 2010 and 44 percent in 2009.

Our friend Micki Maynard of Changing Gears, though, reports that the Detroit companies' comeback — in terms of market share — may be over.

This is the last day procrastinators have to file state and federal income tax returns. Karen Connelly, a spokeswoman for the Internal Revenue Service says only about 20% of Colorado taxpayers have to write a check to the government when filing their taxes. The other 80% receive refunds.

Greenpeace released its latest report today asking, "How clean is your cloud?"

The annual report examines the server farms built by the largest Internet companies — including Amazon, Apple, Facebook, Google, Microsoft and Yahoo — and ranks them according to how efficient their cloud facilities are, and where they get their electricity.

Yahoo — which has struggled to please investors in recent years — was the only major Internet company in the study to get most of its electricity from renewable or clean energy sources, according to the report.