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At the University of Queensland, there is a display containing the longest-running laboratory experiment in the world. It's been going for so long that two of its custodians have died before seeing ...

A suspended apparatus used to minimize friction during the experiment. The heavier brass cylinder and lighter ping-pong ball collide repeatedly against the transparent wall, reproducing 31 collisions ...

From the time she was a child, Anna-Sophia Boguraev has had her eye on space. When she was 4, she built a cardboard rocket ship. She asked a lot of questions, loved looking at the stars and was set on ...

This image released by Neon shows Dr. Roy Walford, foreground, with candidates for the Biosphere 2 Project from the documentary "Spaceship Earth." (Peter Menzel/Neon via AP) During lockdown, have you ...