For decades, quantum gravity has been a theory-driven field, lacking direct experiments. A Stanford PhD student explains how new tabletop experiments may soon allow us to test whether gravity is truly quantum. These advances could shift our understanding of one of the most fundamental questions in physics. | Perimeter Institute

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4.1K views · 79 reactions | Space-time is woven together from quanta of gravity, much like how a t-shirt is knitted together from a cotton thread.  Carlo Rovelli answers a question from the audience about loop quantum gravity. You can find the full talk here: youtube.com/watch?v=-6rWqJhDv7M Watch Carlo Rovelli's most recent Ri talk, on the birth of quantum physics: youtube.com/watch?v=B_HJtVX9fRM | Royal Institution of Great Britain | Facebook