Streams

Marcelo Gleiser

Marcelo Gleiser appears in the following:

Do Black Holes Exist?

Wednesday, February 05, 2014

Stephen Hawking wants to do away with black holes (as we know them) so he can save the two pillars of modern physics: general relativity and quantum mechanics. At stake is our understanding of the nature of space and time, and how matter affects, and is affected by, both.

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When Science Beats Fiction

Wednesday, January 29, 2014

The European Space Agency's Rosetta spacecraft is on track to rendezvous with a far-away comet and land a probe, a first. It will be a major turning point in our history and one that promises to address key questions such as the origin of water and life on Earth.

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The Problem With A Clockwork Universe

Wednesday, January 22, 2014

Is life (the universe and everything) just a series of predictable events, a chain of physics problems stringing all the way back to the Big Bang? Commentator Marcelo Gleiser takes on determinism.

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The Choice Is Yours: The Fate Of Free Will

Wednesday, January 15, 2014

We seem to make our own choices all the time: chicken instead of steak, a book instead of a movie, the beach instead of the mountains. But free will is an illusion in the eyes of some researchers. Commentator Marcelo Gleiser gives it some thought and decides he's not buying that argument.

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A Tribute To Failure

Wednesday, January 08, 2014

Success is what we all strive for in life. But the truth is that behind every success sits a pile of failures. And that's just the way it should be, says commentator Marcelo Gleiser.

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Why We Need A Science Capable Of Explaining Itself

Wednesday, 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.

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Probing The Unknowable Mysteries Of The Brain

Wednesday, December 04, 2013

Is the brain a sort of quantum computer? What is consciousness? Marcelo Gleiser's brain is buzzing with big questions after participating in a conference that asked if quantum physics plays a role in how we think.

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A Darker Universe

Wednesday, November 06, 2013

The hunt for dark matter started in the 1930s and shows no signs of ending any time soon. But physicist Marcelo Gleiser says our inability to pin down this key component to reality only makes it more alluring.

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Every Child Is Born A Scientist

Wednesday, 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.

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The 10 Most Important Questions In Science*

Wednesday, 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.

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Old Sun, New Sun, Our Sun

Wednesday, September 04, 2013

Astronomers have found younger and older twins to our sun, giving us a peek at our mother-star's past and future. Physicist Marcelo Gleiser says it's hard not to wonder what kind of life an older solar system might harbor and how similar, or different, it would be from us.

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Enough Already With This 'Theory Of Everything'

Wednesday, August 28, 2013

Boiling the Universe down to its essence is an age-old dream. But does the notion that we can sum up everything in a single, hopefully elegant, theory make sense? Physicist Marcelo Gleiser doesn't think so, saying that the very idea of a final theory clashes with the essential premise of science.

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Imperfection Makes The Universe Beautiful

Wednesday, August 21, 2013

It's time to reconsider the grand quest for "unification" in modern physics, says commentator Marcelo Gleiser. Our unrelenting search for symmetry and perfection in the natural world leaves us blind to data that seems to depict an imperfect and asymmetric Universe.

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The Idea That Changed The World: 100 Years Of Quantum Jumps

Wednesday, August 14, 2013

A technological revolution that is still playing out today began with new ideas about how atoms and subatomic particles work. Commentator Marcelo Gleiser tells the story of Danish physicist Niels Bohr and the work that changed how we live today.

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The Nature Of Consciousness: A Question Without An Answer?

Wednesday, August 07, 2013

We don't know how the brain creates consciousness, the subjective you. So, can machines do it, too? Commentator Marcelo Gleiser confronts "the hard problem of consciousness" and finds a world in which what we can know may have its limits.

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Genetically Modified Organisms: To Eat Or Not To Eat?

Wednesday, July 31, 2013

Genetically modified crops are here to stay. How should we react? Commentator Marcelo Gleiser says it's time for scientists to take a larger role in the debate, bringing what we know out into the light and asking the important questions that are yet to be answered.

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The World's Oldest Known Calendar Discovered In Scotland

Wednesday, July 24, 2013

Found in Scotland and dating from 10,000 years, the oldest calendar shows that hunter-gatherers already knew how to mark time by looking a the skies. The discovery forces us to rethink what we know of ancient cultures and time-keeping.

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More Is Different: Nature's Unruly Complexity

Wednesday, July 03, 2013

Reductionism, science's "divide and conquer" approach, has done a lot; but Nature's complexity calls for a complementary approach based on a variety of new laws. Else, says Marcelo Gleiser, we have a slim hope of describing how life or the brain work.

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Laws Of Man And Laws Of Nature

Wednesday, June 26, 2013

The laws of man order society, making sure we don't descend into chaos; the laws of nature reveal ordered patterns. Commentator Marcelo Gleiser considers the similarities and differences between the two, and whether the laws of Nature could change, as the laws of man do.

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Does Life Have A Purpose?

Wednesday, 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.

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