Science & Technology Q&A for Kids (and others) [May 22, 2026]

Stephen Wolfram answers general questions from his viewers about science and technology as part of an unscripted livestream series, also available on YouTube here: https://wolfr.am/youtube-sw-qa

Topics: Why perpetual motion machines fail - What might be driving the universe's expansion - How particles emerge from the structure of space - Entropy and the Big Bang theory - How temperature can become negative