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Old Thunder Thighs: T. Rex's Weight Topped 9 Tons
The dinosaur also sported some of the most enormous thighs, the researchers found.
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US Birthrates Decline in Wake of Poor Economy
Americans are putting off having children in the bad economy.
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The Pill Sabotages Sex, Boosts Relationship Happiness
A new study suggests that birth control use during initial dating could impact a woman's long-ter...
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Countries With Most Twins Identified
New twin databases could help answer mysteries of why some regions have such high twinning rates.
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Image of the Day
Amazing images every day!
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Diabetes & Obesity in America (Infographic)
Here are the states with the highest and lowest obesity rates.
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TOP STORIES
More Teen Boys Than Ever Using Condoms, CDC Reports
Rocking Discovery: Boulders Rub Shoulders During Quakes
Black Death Is 'Grandmother' of All Modern Plague
Naked Mole Rat Genome May Hold Key to Long Life
'Mind-Blowing' Sex Can Wipe Memory Clean
IMAGE ALBUMS
Image Gallery: The Life of T. Rex
Dazzling Draconids: Photos of a 2011 Meteor Shower
Amazing Mollusks: Images of Strange & Slimy Snails
Rise of the Drones: Photos of Unmanned Aircraft
IMAGE OF THE DAY
Full Moon Casts Icy Glow
TOPICS
Amphibians
COUNTDOWNS
Seeing Double: 8 Fascinating Facts About Twins
INFOGRAPHICS
Zombie Facts: Real and Imagined (Infographic)
WALLPAPERS
Io: The Prometheus Plume
Space
Distant Galaxies Provide Timeline for Universe'...
Astronomers have created a timeline for the age of re-ionization in the universe for the first time.
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Rogue Failed Star Is One of Smallest Ever Seen
Scientists Discover Ozone Layer On Venus
Raining Meteorites May Have Led to Earth's Primordial Life
Animals
New Cubs Offer Hope for Tigers, But Cats Still ...
Conservation efforts like captive breeding programs are helping tigers avoid extinction. Will tigers s...
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Calling Card: Meerkats Can Identify Another by Voice Alone
African Rodents Invaded Brazil 41 Million Years Ago
Snails Sail Through Life on Bubbles of Mucus
Health
For Tiny Babies, Brain Growth Predicts Intellig...
The more a preterm baby's brain grows in infancy, the better the child performs on intelligence tests ...
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Kind Words Can Lead to Harsh Consequences
Daily Ginger Dose May Reduce Risk of Colorectal Cancer
Vitamin E May Increase Prostate Cancer Risk in Men
Environment
Dive to Rescue Blackbeard's Pirate Ship Hits Snag
Mission has already turned up several artifacts.
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Why Rescue Missions from Antarctica Are So Hard
7 Population Milestones for 7 Billion People
Journey to Antarctica: Mission to Drill Into Ice-Buried Lake
Technology
Military Seeks Sensor to Gauge Brain's Reaction...
DARPA program Narrative Networks looks to understand and detect how listening to stories changes your ...
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Unlikely State Is Tops in Tech Job Hiring
High-Tech Mouthpieces Take the Football Field in Brain Injury Study
High-Tech Tools Let Researchers Track Dinosaur Footprints
Culture
5 Facts about the Wealthiest 1 Percent
In the United States, there is a wide and ever-widening gap between the super-rich and everyone else. ...
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Glowing Bacteria Make a Pretty Postcard
Birthrates, State-by-State
How Many People Can Earth Support?
Hot Topics
Hurricane Irene
The first hurricane of the season, Hurricane Irene is packing a punch, as the giant storm barrels up the east coast.
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Research i...
Images reveal the amazing world of science.
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ScienceLives
These ScienceLives articles are provided to LiveScience in par...
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Behind the...
These Behind the Scenes articles were provided to LiveScience ...
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Japan Eart...
Here's the science behind Japan's deadly earthquake and tsunami.
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Daylight S...
LiveScience gives you the scoop on time change.
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VIDEO
Dragonflies: The Flying Aces of the Insect World
Scientists are using high-speed cameras to help them study how dragonflies pull off complicated aerial feats that include hunting and mating in mid-air. They can fly straight up, straight down, hover like he...
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Submarine Scientists Test New Un...
Aquarius Reef Base, the world's only fulltime u...
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Above the Aurora: An Amazing Spa...
This glorious series of images was captured by ...
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Shrinking Sea Ice Drives Thousan...
In recent years, massive walrus have swarmed on...
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Seeking Water in the Desert? Use...
Using technology from missions that mapped ice ...
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Underwater Discoveries in Arctic...
The ice-covered ocean at the North Pole is yiel...
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Invasion of the Earthworms!
Think of earthworms and a few things come to mi...
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9/11 Rescue Robots
Within 24 hours of the attack robots were put i...
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The Evolution of Airport Securit...
9/11 has changed the way we deal with airport s...
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Improvising in Disaster
Emergency responders improvised to save lives i...
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