Aug 27, 2014 — We've learned so much, yet we still don't know the composition of 95 percent of the cosmos. Commentator Marcelo Gleiser says it is good to stay humble and keep an open mind as the search continues.
Jul 9, 2014 — We don't have all the answers; many big questions hang over the world of theoretical physics. Is this business as usual? Or symptom of a major crisis in our understanding of nature?
Jun 20, 2014 — The World Cup is on, a festival of amazing teamwork and theatric tribalism. Billions of humans love soccer. Are games a mark of intelligence, something we should expect to find across the cosmos?
Mar 26, 2014 — Scientists last week revealed evidence of gravitational waves from the very beginning of the universe. Commentator Marcelo Gleiser asks: Are we closer to understanding creation itself?
Mar 17, 2014 — The very first moments of the universe hold secrets we'd very much like to know. Commentator Adam Frank says news today takes us a step closer to understanding the origins of the cosmos.
Feb 4, 2014 — When did it first become possible for life (as we know it) to appear in the cosmos? The answer seems obvious now. But it arrived, unexpectedly, in the shower. It's a story that tells us a lot about how creativity works in science.
Dec 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.
Nov 20, 2013 — Life on Earth is connected to the stars in ways we couldn't imagine a thousand years ago. Physicist Marcelo Gleiser says the journey to understanding our relationship with the cosmos has transformed how we see ourselves and all that surrounds us.
Nov 6, 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.
Oct 29, 2013 — Carl Sagan, an astronomer with the soul of a poet, liked to remind us that we were all made of "star stuff." It was, without a doubt, one of his most beautiful images. Astrophysicist Adam Frank says it's not just an abstract concept; you can reach out and feel it in the space dirt covering your ride.