Why is the night sky dark? How do dolphins sleep without drowning? Why do hangovers occur? Will time travel ever be a reality? What makes a knuckleball appear to flutter? Why are craters always round?
There's only one source to turn to for the answers to the most puzzling and thought-provoking questions about the world of science: Scientific American. Writing in a fun and accessible style, an esteemed team of scientists and educators will lead you on a wild ride from the far reaches of the universe to the natural world right in.
Scientific American's Ask the Experts: Answers to The Most Puzzling and Mind-Blowing Science Questions pdf free download
Scientific American's Ask the Experts: Answers to The Most Puzzling and Mind-Blowing Science Questions pdf download
Editors of Scientific American ebooks downloads
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