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December 17, 2014 Commentator Marcelo Gleiser says that while he enjoys sci-fi speculation like most people, he also thinks there is a chance, in viewing recent films, to learn something about ourselves and our planet.
Step back in time: This is what 100 million years ago looked like, in a galaxy far, far away.
December 24, 2013 Ebenezer Scrooge was famously visited by three ghosts who woke him to the wonders of the life right before his eyes. We can also let the past, present and future converge on us to the same effect. All we have to do is step outside and let the night sky become a time machine.
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Oceans, and the innards of Earth itself, are the final frontiers of our planet. Expect amazing discoveries as explorers document more and more of this unseen realm.
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September 18, 2013 Science may seem advanced, may even be advanced, but that doesn't mean there aren't still plenty of questions left to ask and answer. A new book catalogs 20 of the biggest questions outstanding. Physicist Marcelo Gleiser looks the list over and ponders some of the subjects keeping scientists awake at night.
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