Marcelo Gleiser

Marcelo Gleiser is a contributor to the NPR blog 13.7: Cosmos & Culture. He is the Appleton Professor of Natural Philosophy and a professor of physics and astronomy at Dartmouth College.

Gleiser is the author of the books The Prophet and the Astronomer (Norton & Company, 2003); The Dancing Universe: From Creation Myths to the Big Bang (Dartmouth, 2005); A Tear at the Edge of Creation (Free Press, 2010); and The Island of Knowledge (Basic Books, 2014). He is a frequent presence in TV documentaries and writes often for magazines, blogs and newspapers on various aspects of science and culture.

He has authored over 100 refereed articles, is a Fellow and General Councilor of the American Physical Society and a recipient of the Presidential Faculty Fellows Award from the White House and the National Science Foundation.

This is the second in a series of essays concerning our collective future. The goal is to bring forth some of the main issues humanity faces today, as we move forward to uncertain times. In an effort to be as thorough as possible, we will consider two kinds of threats: those due to natural disasters and those that are man-made. The idea is to expose some of the dangers and possible mechanisms that have been proposed to deal with these issues. My intention is not to offer a detailed analysis for each threat — but to invite reflection and, hopefully, action.

This is the first in a series of essays concerning our collective future. The goal is to bring forth some of the main issues humanity faces today, as we move forward to uncertain times. In an effort to be as thorough as possible, we will consider two kinds of threats: those due to natural disasters and those that are man-made. The idea is to expose some of the dangers and possible mechanisms that have been proposed to deal with these issues. My intention is not to offer a detailed analysis for each threat — but to invite reflection and, hopefully, action.

Right when Steve Spielberg's rendition of Roald Dahl's classic The BFG hit the screens here on Earth without the expected impact, NASA's probe Juno, in a spectacular performance, entered orbit around monstrous, stormy Jupiter — our solar system's "unfriendly" gi

When we look at the world around us, we don't see everything. We can't.

As Edgar Allan Poe wrote, quoting Lord Bacon in Ligeia: "There is no exquisite beauty without some strangeness in the proportions."

Late last year, when most people were getting ready for the holidays, physicists at the Large Hadron Collider (LHC) machine at CERN, the European Organization for Nuclear Research, made a startling announcement: Their two massive detectors had identified a small bump in the data with an energy level of about 750 GeV.

You read it everywhere, you watch it on TV and in sci-fi movies: Science is dangerous, it can create terrible weapons, it can control our lives, it can create new diseases, machines that will take over the world, that will wipe out the human race and redefine life as we know it.

Why We Love Aliens

May 25, 2016

There is an interesting convergence going on these days, whereby aliens are back as the focus of attention.

Fear Of Not Knowing

May 18, 2016

Today, I want to riff on Sean Carroll's stimulating contribution to 13.7 this past weekend by bringing up a few open scientific questions that are particularly baffling.

Life, for all its remarkable diversity, displays also a remarkable unity.

There is, of course, the way by which animals reproduce, as genetic information encoded in DNA is passed on to new generations in nearly all animals. The two strands of the huge molecule coil as if forming a spiral staircase, with each rung consisting of pairs of chemical groups (bases) which combine in very specific ways: adenine to thymine and guanine to cytosine. In the many ways by which life attempted to emerge on Earth billions of years ago, this was the system that worked best.

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