A simple, clever new experiment shows that, at faster-than-light speeds, waves can appear to be traveling backward in time.
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2016
(4014)
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▼
April
(355)
- Tomatoes: Health Benefits & Nutrition Facts
- Weird Tailless Comet, First Ever Seen, Is a Buildi...
- Why Can't Elephants Jump?
- Portable Device Can Test If Your Food Is Gluten-Free
- Tailless Comet Is 'Time Capsule' From Earth Format...
- Beyoncé Got It Right: Cheating's Emotional Fallout...
- Science Explains Why Your Mom Calls You by Your Br...
- Secret Atomic Role of WWII-Era Aircraft Carrier Re...
- Mumps Outbreak at Harvard: Why Do Vaccinated Peopl...
- Dinosaurs Migrated Out of Europe as Ancient Superc...
- Jellyfish from Outer Space? Amazing Glowing Creatu...
- 10 Most Incredible Hotel Pools in the U.S.
- 7 Science Museums to Visit This Summer
- New Brain Atlas Reveals Where Words Are Stored
- Jellyfish from Outer Space? First Look Makes You T...
- To Motivate Kids, Don't Dwell on Their Failures
- Buddhist Sculptures Discovered in Ruins of Ancient...
- Photos: 1,700-Year-Old Sculptures Discovered in An...
- Simple Trick May Improve an Infant's Attention Span
- Why Some Women Are Likely to Have Twins
- Pyramid Interior Revealed Using Cosmic Rays
- Did Opioids Kill Prince? Why It's So Easy to Overdose
- Spanking Makes Kids More Defiant, Studies Suggest
- Do Australian Dragons Dream? Sleep Discovery Surpr...
- Starliner Simulators: Astronauts 'Fly' Boeing Spac...
- Some Catsharks See Each Other In 'Glowing Green' |...
- That Youthful Glow? It's in Your Genetic Makeup
- Power Up with Pee: New Fuel Cell Could Generate Ch...
- Teens Who Do Jell-O Shots More Likely to Binge Drink
- See the World Through a Glowing Shark's Eyes
- SpaceX Plans Mars Missions As Soon As 2018 | Video
- Is It Possible to Clone a Dinosaur?
- Having More Friends May Mean Feeling Less Pain
- Elon Musk Will Launch Private Missions to Mars as ...
- In Photos: Glow-in-the-Dark Sharks
- Sleep Problems Linger After Head Injury
- Grapes: Health Benefits & Nutrition Facts
- Earth Gets Greener as Globe Gets Hotter
- Fit in 60 Seconds? 1-Minute Workout May Be Good En...
- 'Mindfulness' May Keep Depression from Coming Back
- Ancient Hyenas Ate Human Relatives Half a Million ...
- 'Lost' Medieval Music Performed for First Time in ...
- Costly, Deadly, Complicated: These 7 Surgeries Tak...
- Unlucky 7? Emergency Surgery Usually Means These O...
- Acting Sorry: Why Johnny Depp Owed Australia an Ap...
- Earth Getting Greener - CO2, Climate Change and Mo...
- Europe Aiming for International 'Moon Village'
- Dying Breed? Zoo Toils to Save Strange 'Scrotum Frog'
- Photos: America's Only Lake Titicaca Frogs
- Whiplash: Symptoms & Treatment
- It Takes Effort to be Selfish
- Scientists Find New Way to Tan or Lighten Skin
- Why Pregnant Woman Are More Prone to Yeast Infections
- 4,000 Sickened in Spain: How Does a Virus Get into...
- Time to Change Your Sheets? Bedbugs Have Favorite ...
- Camera Hogs: Wild Pigs and Other Amazonian Wildlif...
- In Photos: Amazing Amazon Animal 'Selfies'
- Small-Brained Titanosaur Had Super Senses
- Photos: Rare Titanosaur Skull: Tiny Brains, Good V...
- Newly Discovered Titanosaur Skull - 3D Model Creat...
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- Obesity Rates in US Kids Still Rising, Study Says
- Whodunit? Mystery Lines Show Up in Satellite Image...
- Why Do Birds Sing the Same Song Over and Over?
- Mars Comes to Earth: Scientists 'Visit' Red Planet...
- Hairy-Legged 'Chewbacca Beetle' Discovered in New ...
- Are Sports Drinks Better or Worse Than Water?
- Cauliflower: Health Benefits & Nutrition Facts
- Who Will Prevent the Next Chernobyl? (Op-Ed)
- Hubble Telescope Captures Sharpest Image Yet of My...
- 'Axion-like Particles' Probably Not a Dark Matter ...
- An Unusual Case of a Bulging Esophagus
- He Will Rock You: Decoding Freddie Mercury's Vocal...
- Tesla Coils 'Sing' in Electrifying Performance
- New Wearable Device Is Virtual Ski Coach Inside Yo...
- William Shatner: 'Star Trek' Tech Is 'Not That Far...
- TOP 10 MOST POPULAR MARATHONS IN THE WORLD
- Massive Coral Reef Discovered in the Amazon River
- Fire-Breathers from 'Game of Thrones': 9 Real-Life...
- NASA Honors Prince by Tweeting Photo of Purple Nebula
- Why Do People Sneeze in Threes?
- Drug Overdose Deaths Increased 70-Fold in These US...
- Are You an 'Environmentalist'? Fewer in US Say The...
- Poison Pen: Deadly Potions in Shakespeare's Plays
- Cellfina: Is There Finally a Procedure to Banish C...
- Why Some 'Unhealthy' Eating Behaviors Might Not Be...
- Aurorasaurus! Citizens Keep Watch as Auroras Light...
- Woman's Paranoia Had an Unusual Cause
- A Guide to Tap Water's Weird Flavors
- Bizarre Ice-Forming Bacteria's Secrets Revealed
- How Jet-Black Metal Converts Sunlight to Steam Power
- Eras of Time Since the Beginning (Infographic)
- Chart of Geological Time (Infographic)
- Earth Is 'A Beautiful Planet' from an Astronaut's-...
- 'A Beautiful Planet' by IMAX in Photos
- Expert Voices Dr Jeffrey Johnson
- Volatile Sakurajima Volcano is a Lightning Laboratory
- Does Marijuana Make You Stupid?
- A Royal Wardrobe Recovered from 17th-Century Shipw...
- Photos: Opulent Royal Booty Unearthed from a 17th ...
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