Atmospheric oxygen levels have declined over the past 1 million years, although not nearly enough to trigger any major problems for life on Earth, a new study finds.
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2016
(4014)
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September
(401)
- Scopes Monkey Trial: Science on the Stand
- 'The Terrorist Inside My Husband's Brain': Robin W...
- New Jersey Train Crash: Could Safety Tech Have Ave...
- Foldable Bike Helmet Offers Recyclable Protection
- Lollipops Could Lure Elusive Tree Rat Out of Hiding
- Mystery Over Face-Down Skeleton Partly Solved
- Cutest Face-Plant Ever? Baby Panda Falls Off Stage
- Gary Johnson's 'Aleppo Moments': Why We Get Brain ...
- 10 Most Epic Pokemon Go Locations In The World
- Cause of Crohn's Disease: Gut Fungus Now Suspected
- World's Deepest Underwater Cave Discovered
- Goodbye, Rosetta! Spacecraft Crash-Lands on Comet ...
- Is Elon Musk's Plan to Send People to Mars Feasible?
- Ig Nobel Winner: Why I Lived Like a Badger, an Ott...
- Insane Photos of Sinkholes
- Robo Rocker: How Artificial Intelligence Wrote Bea...
- Why We Get Thirsty at Bedtime
- Piltdown Man: Infamous Fake Fossil
- Facts About Porcupines
- New Drug May Help People with Alcohol Addiction Re...
- Life's Extremes: Democrat vs. Republican
- Send Passwords Securely Through Your Body Instead ...
- London Bridge Replica Crowned World’s Largest Lego...
- Do Black Holes Die?
- Are Religious People Less Likely to Support Mariju...
- Flu Vaccination Rates Decline Among Older Adults
- Feel Controlled by Your Hunger? New Study May Show...
- Election Day 2016: A Guide to the When, Why, What ...
- Huge Claw, Bizarre Limbs Helped Ancient Reptile Dig
- Animal Sex: How Nautiluses Do It
- Bumblebee Set to Become Officially Endangered
- In Photos: Spooky Deep-Sea Creatures
- Asthma Inhaler Shrinks to Credit Card Size in New ...
- Clinton Outlines Plans for Health Care in Leading ...
- Facts About Reindeer
- Second Local Case of Dengue Fever Diagnosed in Flo...
- Human-Animal Chimeras: Biological Research & Ethic...
- Donald Trump's Sniffling: What Causes Sniffles Whe...
- Crikey! 'Unluckiest Man in Australia' Gets 2 Penis...
- Primates, Including Humans, Are the Most Violent A...
- World's First Automated Insulin-Delivery Device Ap...
- 'Trumpapillar': Fluffy Caterpillar Looks Just Like...
- Measles Eliminated from the Americas: Here's Why T...
- Ancient City Gate and Shrine from Hebrew Bible Unc...
- Biblical Gate Shrine Uncovered in Israel's Tel Lac...
- Book Excerpt: 'Venomous' (US 2016)
- Rock You Like an Earthquake: Exhibit Converts Quak...
- World's First '3-Parent' Baby Born: Is It Ethical?
- Naval Whodunit: How the Doomed Crew of Arctic Expe...
- Fly-Through SpaceX's Massive 'Fun' Spaceship To Ma...
- Live Science Book Giveaway: 'Venomous' by Christie...
- Gate-Shrine Described in Hebrew Bible Excavated in...
- Marijuana Use May Raise Risk of Psychosis Relapse
- SpaceX's Elon Musk Unveils Interplanetary Spaceshi...
- Why the Breeding of Mutant Cats Should Be Banned (...
- It's Not the Economy: Why Unique Baby Names Are Tr...
- 5,000-Year-Old Swirling Rock Art in Scotland Remai...
- Halloween 2016: A Guide to the When, Why, What and...
- New Weight-Loss Treatment Helps You Diet Despite F...
- A Vaccine for the Common Cold May Be Possible
- What Your Temperament Says About You (or a Preside...
- World's Atmospheric Carbon Dioxide Passes 400 PPM ...
- Dinosaur Horns and Crests Tied to Rapid Growth Spurt
- The Universe Is Directionless, Study Finds
- Did 1 Sexually Active Tortoise Really Save His Spe...
- Religion May Motivate Humanity's Future Expansion ...
- SpaceX to Mars: Awe-Inspiring Video Shows Vision f...
- 6 Strange Facts About Leprosy
- New Shape-Shifting Materials Let Biomedical Implan...
- Clown Sightings Not Always a Laughing Matter
- Artificial Blood Vessels Grow After They're Implanted
- Stop Complaining about 'Fake' Colors in NASA Images
- 14 Strangest Sights on Google Earth
- The Complicated Sex Lives of Giant Pandas
- Neanderthals Fashioned 'Jewelry' Out of Animal Tee...
- Rate of Opioid-Dependent Babies Doubles in US
- New 'Artificial Synapses' Pave Way for Brain-Like ...
- On Jupiter's Moon Europa, More Tantalizing Signs o...
- 1st Computer-Generated Music Record from Alan Turi...
- Heavy Marijuana Use May Damage the Brain
- This Roller Coaster Helps People Pass Kidney Stone...
- Should Men Get Screened for Breast Cancer?
- Universe Likely Has No Preferred Direction | Video
- Water Vapor Plumes On Europa Possibly Snapped By H...
- Elon Musk Unveils SpaceX Raptor Engine Test for In...
- America's Climate Plan Falls Short of its Promises
- Burn Scar From Massive Australian Wildfire Visible...
- Morning Sickness Really Is a Good Thing
- In Photos: The 2016 Ig Nobel Prize Ceremony
- Boredom Is Good for Kids
- Pluto's 'Heart' Hints at Deep, Underground Ocean
- 6 Big Mysteries of Alzheimer's Disease
- Deep-Diving Robots Zap, Kill Invasive Lionfish
- Stephen Hawking Is Still Afraid of Aliens
- The Most Interesting Science News Articles of the ...
- Stephen Hawking Is Still Afraid of Aliens
- Amazing Images: The Best Science Photos of the Week
- America's Opioid-Use Epidemic: 5 Startling Facts
- Facts About Nickel
- Facts About the Global Seed Vault
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