Marcelo Gleiser

In 1924, Edwin Hubble found proof that the Milky Way isn't the only galaxy in the Universe.

13.8 columnist Marcelo Gleiser reflects on his recent voyage to Earth's last wild continent.

At the heart of many scientific challenges lies a lack of understanding of the human observer and their lived experiences.

The problem of the "first cause" may forever remain open because it doesn’t fit with the way we do science.

The lie at the heart of the physics of time

The spectacular eclipse on April 8, watched by tens of millions in the U.S. alone, reminded us of our deep connection to the skies.

A Q&A with astrobiologist Lisa Kaltenegger about the modern quest to answer an age-old question: "Are we alone in the cosmos?"

New technologies can sometimes give rise to new threats. But that doesn't mean science itself is to blame.

Science can be thought of as a series of maps of nature, striving to be ever more complete, as models and theories evolve.