The Big Sky Carbon Sequestration Partnership is inviting legislators and the public to a free workshop on carbon sequestration at 1 p.m. Friday in Room 303 of the Capitol in Helena. The workshop will cover carbon-sequestration technologies, including terrestrial and geologic carbon sequestration, carbon markets, benefits to the state and issues related to proposed legislation. After an introduction and presentation, audience members will have the opportunity to ask the Big Sky Carbon