December 18, 2013 What was there before the universe began? It's not a question we can really answer with the science we have at hand, says commentator and physicist Marcelo Gleiser.
October 30, 2013 We are a society obsessed with death and dying. It's time we moved the other way and put more of our energy into celebrating life and living. We have a lot to learn from our children here, who are constantly performing grand experiments about the world. Until, that is, we stop them.
October 23, 2013 The fragility of life in space gets a closeup in Gravity, the hit movie featuring Sandra Bullock and George Clooney. Commentator Marcelo Gleiser says that, despite its anxious narrative pace, Gravity is, at its heart, a celebration of life and the importance of our own very small Earth.
September 11, 2013 We know a lot. But we don't know everything. In fact, science still has quite a few "big" questions left to answer. Physicist Marcelo Gleiser pokes at 10 of them, questions highlighted in a new book naming the most difficult scientific problems of our time.
June 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.
April 17, 2013 Is the importance of life on Earth shrinking as science continually re-defines our world as a meaningless speck in an endless and uncaring Universe? Or is life here a precious thing that grows in importance with our ever-deepening knowledge of the Universe? Commentator Marcelo says it's the latter.
April 9, 2013 Did the seeds of life on Earth begin on Mars? Are we part of Earth's first alien invasion? Adam Frank says we may be looking at a future full of discoveries in our own solar system that could reset our understanding of life and its origin.
March 20, 2013 Can science explain the origins of the universe, of life and of the mind? Not completely, it turns out. But how far can it go in answering them? Commentator Marcelo Gleiser starts digging into these questions.
February 8, 2013 We know a great deal about life and its pre-biotic precursors. But do we now understand how life is built from non-life? This is still an open question. Philospher Alva Noë considers this state of affairs in the context of the storm of controversy surrounding Thomas Nagel's book.
July 3, 2012 Two videos with lessons on our collective history and the meaning of life.
December 14, 2011 As modern science traces the steps from the big bang to intelligent life, the question of whether we are the rule or the exception leaps to the forefront.
September 10, 2011 Some of the most arresting images from Sept. 11 were collected by Life magazine, Magnum and VII.
March 23, 2011 In remembrance of the Hollywood legend, life.com has published rare photos.
March 8, 2011 To honor the momentous Muhammad Ali-Joe Frazier boxing match, Life has published a gallery of never-before-seen photos.