Jun 19, 2013 — Obama also defended his administration's surveillance programs, saying they've struck the right balance between security and privacy.

Jun 19, 2013 — The American Medical Association still has a considerable bully pulpit. And the group's vote Tuesday could give more oomph to efforts to have obesity interventions paid for by insurers and to get the public focused on the problem.

Jun 19, 2013 — More interview transcripts from the IRS investigation are released, but there's still no evidence of a direct connection to the White House.

Jun 19, 2013 — Recycling old bottles into new bottles is surprisingly complex. We visited a recycling plant and a bottle factory to see the whole process.

Jun 19, 2013 — The diversity of life on Earth, and its ever-growing complexity, leads many people to think that there must be a purpose to its existence. Commentator Marcelo Gleiser argues that, quite the contrary, the only purpose of life is to preserve itself. There is no hidden hand behind it all.