Marcelo Gleiser appears in the following:
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Wednesday, June 12, 2013
Science is often accused of extinguishing our enchantment with the world, of being too cold and rational. Quite the opposite is true, says Marcelo Gleiser. Modern science has restored a sense of wonder to the world with its revelations of objects unseen and realities unknown.
Wednesday, June 05, 2013
Last week NASA scientists put the space telescope Kepler in a kind of technological coma. The craft, designed to search for Earth-like planets orbiting stars in our cosmic neighborhood (within a few thousand light-years, that is), failed and seems to be unfixable. But it has left us with an undeniable legacy.
Wednesday, May 29, 2013
Can we act backwards in time? We can if we're talking about the world of quantum particles! It seems that the human mind plays a role in this time puzzle, too. Our role may even have something to do with why the universe exists.
Wednesday, May 22, 2013
Confronted with the amazing advances made by science, why do so many still cling to God as a creator? Could the answer be that we need to be created in order to be special? Or are we afraid of our own unique place in the Universe? Marcelo Gleiser knows what he thinks.
Wednesday, May 15, 2013
Improvements in science education can take many forms. Commentator Marcelo Gleiser says that one of the easiest and most rewarding is to simply put real research scientists in front of students. A few volunteer hours from a scientist can change how a student sees the world forever.
Wednesday, May 08, 2013
Physicist Marcelo Gleiser recalls his early interest in competing interpretations of the quantum world. Now a successful researcher in his own right, he wonders if its time to switch gears and turn his casual interest into a professional pursuit.
Wednesday, May 01, 2013
How do you explain it when unseen forces act across time and space? The fact is that reality is far stranger than we can suppose when we step into the quantum world. Physicist Marcelo Gleiser lays out the bones of this modern ghost story.
Wednesday, 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.
Wednesday, April 10, 2013
Science discovers one dark material after another, making reality stranger than fiction. Commentator Marcelo Gleiser says the recent observation of the Higgs field and last week's announcement of the possible detection of dark matter are just the latest data points in our long quest to know what the Universe is made of.