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Strings, Geometry, and the Ultimate Reality: The Debate

Strings, Geometry, and the Ultimate Reality: The Debate

Can strings be the ultimate constituents of the universe–more fundamental than matter or energy, and even than space or time? If they’re not made of matter or energy, what are they, then?

July 30, 2011 — Davide Castelvecchi

This Is What We Don’t Know About The Universe

In recent days I’ve had some interesting conversations. There’s a giddiness going around, related to an outpouring of science love – the kind you get from President Obama introducing TV science shows, the kind that has wonderful visuals, but is, well, a wee bit simplistic (a sin that none of us could ever, ever be [...]

March 12, 2014 — Caleb A. Scharf
Cool Math & Physics Blogs

Cool Math & Physics Blogs

From time to time, I’ve done something that could be construed as blogging for years now (at my web site,, but I am still a blogosphere novice.

July 28, 2011 — Davide Castelvecchi
The Biggest Cosmological Problem Is…

The Biggest Cosmological Problem Is…

…living in a place that makes doing cosmology hard. Let’s backtrack a little. Unless you’ve been living under a particularly thick and insulating rock you’ll know that in recent months the world of experimental cosmology (what would have previously been called observational cosmology, or just plain old astronomy) has been on tenterhooks waiting to see [...]

September 22, 2014 — Caleb A. Scharf

Shocked Physicist Learns His Big Bang Theory Is True [Video]

Few people were as thrilled with the big physics news today as physicist Andrei Linde. One of the main authors of inflation theory--the idea that the universe expanded incredibly rapidly just after it was born in the big bang--Linde has reason to be excited.

March 17, 2014 — Clara Moskowitz

Physicist Slams Cosmic Theory He Helped Conceive

I love apostates, believers in or, better yet, conceivers of a theory who turn against it. They restore my faith in science, because they show that scientists can overcome attachment to their own brainchildren, a feat that is essential for progress and cannot be taken for granted.

December 1, 2014 — John Horgan
Troublemaker Lee Smolin Says Physics—and Its Laws—Must Evolve*

Troublemaker Lee Smolin Says Physics—and Its Laws—Must Evolve*

What separates good from bad troublemakers? Productive provocateurs from mere contrarians, bullshit artists, attention-seekers? This is the personalized equivalent of philosophy’s demarcation problem, which involves telling genuine from pseudo-science.

January 4, 2015 — John Horgan