Why Do Astronauts Often Grow Taller In Space? Bone density increases Muscles relax Spine decompresses Gravity shifts fluids Did You Know! Your Nose and Ears Really Do Keep Growing Unlike…

What Strange Effect Can Extreme Cold Have On Human Skin? Turns red Turns waxy Turns green Turns yellow Did You Know! There Are More Than Just 4 Blood Types Most…

Why Do Some People’s Bones Look Blue Under Strong Light? Copper deposits Thin calcium layer Dehydration Blood vessel glow Did You Know! Your Blood Knows the Time of Day Blood…

Which Human Body Fluid Was Once Used In Laundry Soap? Sweat Saliva Urine Tears Did You Know! Blood Can Become “Sludgy” in Space In microgravity, astronauts’ red blood cells break…

Which Condition Causes People To Faint At The Sight Of Blood? Phobia Vasovagal syncope Anemia Adrenal crash Did You Know! They Can Hold an Entire Tennis Court Inside If you…

What Was Once The Main Ingredient In “Toothache Drops” In The 1800s? Opium Mint oil Whiskey Vinegar Did You Know! The Lungs Are Covered in “Soap” Your lungs produce a…

Which Bodily Function Produces Enough Pressure To Break Ribs? Sneezing Vomiting Coughing Yawning Did You Know! Lungs Can “Taste” Bitter Flavors Deep inside the airways, lung cells have receptors similar…

Which Color Was Once Used In Wallpaper And Made People Sick? Blue Green Red Yellow Did You Know! Your Stomach Lining Renews Itself Every 3–4 Days Stomach acid is strong…

What’s The Only Body Part That Doesn’t Age At The Same Rate As The Rest Of You? Eyes Inner ear Lens of the eye Teeth Did You Know! The Gut…