<div>This is no ordinary fun-fact book: These 132 offbeat questions represent the best reader submissions to<i>New Scientist</i>’s beloved “Last Word” column—a rare forum for “un-Google-able” queries, now in its 21st year! The unpredictable answers—sourced from the combined brainpower of<i>New Scientist</i>’s sophisticated and far-reaching readership—reflect readers’ wide-ranging areas of interest and expertise—from physics, chemistry, and biology to astronomy, zoology, and beyond.<br><br>One reader wonders if our two-legged stance invites back pain, and hears back from a veterinary surgeon who has treated countless back problems in dogs, cats, and rabbits. Another learns how large raindrops can get and how fast they can fall, from a science teacher who did his own experiment at the top of a lofty stairwell. And a professor of human anatomy weighs in on whether the heart can cramp like a calf muscle.<br><br><b><i>Know It All </i></b>is your ticket to a grand meeting of curious minds—and a celebration of<i>all </i>questions—strange, trivial, or baffling!</div>