For decades, physicists have struggled to create a quantum theory of gravity. Now an approach that dates to the 1970s is attracting newfound attention.
https://media.wired.com/photos/5a5905f218cd376c8fc26e39/master/pass/QuantaArtJan13.jpg
For decades, physicists have struggled to create a quantum theory of gravity. Now an approach that dates to the 1970s is attracting newfound attention.
https://media.wired.com/photos/5a5905f218cd376c8fc26e39/master/pass/QuantaArtJan13.jpg