Today's Top Story: The Best Way to Tell if You Need Water 🌊

Read more of today's topics... Today's Topics: [How Do You Know When You're Dehydrated?]( 1) MIND & BODY [How Can You Tell When You're Dehydrated?]( If you're thirsty, it might already be too late. [WHAT ARE THE WARNING SIGNS?]( Advertisement [Learn more about RevenueStripe...]( [All the Ways Learning English Will Destroy Your Brain]( 2) LANGUAGE [All the Ways English Grammar Is a Lawless Wasteland]( "I before E" is a lie. Or is it a lei? [Read more ➞]( [Why Do Cats Love Boxes?]( 3) ANIMAL IQ [Why Do Cats Love Boxes So Much?]( It's a question as old as the internet. [Read more ➞]( [It's Mathematically Impossible to Stop Aging, and Here's Why]( 4) SCIENCE & TECHNOLOGY [It's Mathematically Impossible to Stop Aging]( Sorry Cher — you can't turn back time. [Read more ➞]( [There's a Hidden Beach in Mexico Called Playa del Amor]( 5) AMAZING PLACES [Playa del Amor Is Puerto Vallarta's Secret Beach]( How did this beach get so well hidden? [Read more ➞]( What We're Into: [LEGO Women of NASA]( [LEGO's Women of NASA Series]( Talk about pressing all of our buttons — this play-set has got women in science, landmark moments in NASA history, and, oh yeah, LEGOs. It's obvious why this is our readers' favorite entry in our [STEM toys for kids gift guide](. If you do pick this up for the future flight engineer in your life, you'll help support Curiosity as well. [Start building the future]( Got a Question? If there's something you're curious about, then we guarantee we're curious about it, too. Write in your questions to the thequestion@curiosity.com and we just might feature you in The Answer, published in the newsletter every Saturday. [DISCOVER MORE AMAZING STORIES]( Advertisement You Might Like [Learn more about RevenueStripe...]( SMARTEN UP YOUR SOCIAL NETWORK [Facebook ]( [Twitter ]( [Instagram ]( You are receiving this message because you signed up to receive emails from Curiosity. [Unsubscribe]( | [Privacy Policy]( | [Update Email Preferences]( 4809 N Ravenswood Ave, Chicago, Illinois 60640