in effect in january. the company's chief says it's an effort not just to save on insurance costs but to set a good example for patients and employees. >> for too long we have been in the sick care business. it's time that we move into the health care business. >> trace: some argue the plan crosses a line and violates' people's rights. it's not against the law in texas. if you are a smoker quit now or don't plan to apply for a job. smokers already on staff won't lose their jobs but they have to pay more in insurance premiums and the company offers free classes to anybody who wants to kick the habit. well, more than 200 years ago the great american explorers lewis and clark committed an act of thievery. right now their ancestors are about to try to make it right. that's coming up. and fire up your delorean. because scientists have just announced a discovery that could change everything we know about the universe. and just maybe help make time