Marcelo Gleiser

People often ask me how I got interested in science. I wish I could answer that I had a mentor when I was a child, that a biologist or a physicist visited my school when I was in third grade and transformed my life. But that's not what happened to ...

When I was starting my PhD studies at King's College London, I had the opportunity to meet the famous physicist John Bell. His work established that quantum mechanics — and the bizarre kind of reality it entails — happens to be the way the world is. My conversation with ...

When Isaac Newton published his theory of universal gravitation in 1686, he knew he'd have to confront a few critics. Like a ghost stretching its arms across empty space, Newton's theory described the gravitational attraction between two masses, say, the Sun and the Earth, as a mysterious force that acted ...

A widespread critique of science is that it tells us that the more we know, the more insignificant we are. It's the famous after-Copernicus blues: everything went downhill ever since Earth was moved from the center of the cosmos. Since then, the Sun was pushed out from the center too, ...

The history of science is filled with obscure and bizarre substances. Despite all that we have learned in the past 400 years, the trend continues. Perhaps it's unavoidable, being the way we figure things out. We need to find some apparently weird stuff — playing a game of cat and ...

After a week on the origin of life and another on the origin of the universe, we now turn to the third installment of this series, a digression on the origin(s) of mind. The plural expresses the many ways in which we can think of mind and its origin. I ...

Last week, I started a discussion of what I call "The Three Origins," focusing first on the origin of life. Although we are far from knowing how non-living matter became living organisms on primitive Earth some 3.5 billion years ago (or more), or how to repeat the feat in ...

Scientists from the European Space Agency announced results Thursday from 15.5 months of operation of their Planck satellite mission. Results were eagerly awaited by the astronomical community, as they achieved higher precision than the earlier American mission WMAP. Both satellites measured the tiny temperature fluctuations on ...

Today I'd like to start a discussion on the ways certain kinds of questions present formidable challenges to the conventional scientific method of explanation, based on hypotheses and empirical validation. Given that the topic is vast and space short, I will divide the discussion into three parts (at least). Although ...

Some results in mathematics have the force of real truths, being independent of interpretation or context. When we state that 2 + 2 = 4 we know that this will be correct for any intelligent entity able to count. In algebra, given an equation, say, x + 3 = 4, ...

As some of you may know, I spent last week at CERN, the European high-energy physics laboratory where the famous Higgs boson was discovered last July. Every time I go to CERN I feel a deep sense of reverence. Apart from quick visits over the years, I was there ...

This week I'm at CERN (with co-blogger Stuart Kauffman), the high-energy physics laboratory where, last July, the Higgs particle was found. Yesterday, we heard from Sergio Bertolucci, CERN's director of research and scientific computing.

There is no question that a new particle was found, as reported last July. There ...

Did time start with the big bang? What's outside the universe? Here are answers to these and other questions you always wanted to ask about the universe.

In the Showtime series Dexter, an atheist serial killer confronts other killers who believe themselves to be following God's plan. In the midst of much blood, the plot offers a meditation on science and religion.

Just after the Big Bang, the universe was a primordial soup made of light. Then, it started belching out matter.

Is mirror milk any good to drink?