In the late 1970s, legendary physicist John Wheeler proposed a radical question: Exactly when does the universe notice that we're paying attention to a quantum experiment? And does it really matter?

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In quantum world, particles like photons can behave like particles (localized points) or waves (spreading out, showing interference patterns). The classic double-slit experiment is a good ...

When developers announced plans for a new 38-bay diesel truck transfer station on the grounds of a long-abandoned K-Mart department store, East Portland, Oregon, residents who’d hoped it might become ...