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Brazil Makes Olympic Effort to Keep Rio's Water Clean Brazil Makes Olympic Effort to Keep Rio's Water Clean Brazil Makes Olympic Effort to Keep Rio's Water Clean

Brazil Makes Olympic Effort to Keep Rio's Water Clean

Environment
Lav-ha! Smiley Face Appears in Erupting Volcano
Video

Lav-ha! Smiley Face Appears in Erupting Volcano

Environment
Visit Antarctic Site That's Like 'Being on Another Planet’
Video

Visit Antarctic Site That's Like 'Being on Another Planet’

Weird Science
Watch as Lava Oozes into the Ocean after Hawaiian Volcano Erupts
Video

Watch as Lava Oozes into the Ocean after Hawaiian Volcano Erupts

Environment
Mysterious Light Streaks Across Sky Over California, Nevada
Video

Mysterious Light Streaks Across Sky Over California, Nevada

Space
Watch Space X Rocket Make Successful Return Landing
Video

Watch Space X Rocket Make Successful Return Landing

Space

Space

NASA/MSFC/Meteoroid Environment Office
200 Meteors Per Hour Set to Streak Across the Sky Tonight: How to Watch Perseid Shower 200 Meteors Per Hour Set to Streak Across the Sky Tonight: How to Watch Perseid Shower 200 Meteors Per Hour Set to Streak Across the Sky Tonight: How to Watch Perseid Shower

200 Meteors Per Hour Will Be in Tonight's Perseid Shower

Space
'Star Trek: Deep Space Nine' Actor Barry Jenner Dead at 75

'Star Trek: Deep Space Nine' Actor Barry Jenner Dead at 75

U.S. news
Vostochny Cosmodrome: Russian Space Project Isn't Going to Plan

Russia's Bid to Win New Space Race Isn't Going to Plan

Space
Month in Space: Star Factories and Aquanauts
Gallery

Month in Space: Star Factories and Aquanauts

Space
Deep Space Radiation Caused Heart Problems For Apollo Astronauts

Apollo Astronauts Harmed by Deep Space Radiation

Heart Health
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Environment

Natalia Jimenez / NBC News
'You Have an Inheritance': Yosemite Ranger Reminds Visitors of Park's True Owners 'You Have an Inheritance': Yosemite Ranger Reminds Visitors of Park's True Owners 'You Have an Inheritance': Yosemite Ranger Reminds Visitors of Park's True Owners

Bridging the 'Divine and the Earth' at Yosemite

National Parks at 100
BORIS HORVAT / AFP - Getty Images
Fires Ravage Southern France, Threatening Marseilles
Gallery

Fires Ravage Southern France, Threatening Marseilles

Photo
Thousands Evacuated as Several Fires Blaze Across Southern France

Thousands Evacuated as Fires Burn Southern France

World
Brazil Makes Olympic Effort to Keep Rio's Water Clean
Video

Brazil Makes Olympic Effort to Keep Rio's Water Clean

Rio Summer Olympics
From City Block to Teton Rocks: Bronx-Born Ranger Inspires Young Parkgoers

Meet the Bronx-Born Ranger Inspiring Young Parkgoers

National Parks at 100
Massive Fires Rage in Portugal
Gallery

Massive Fires Rage in Portugal

Photo
From City Block to Teton Rocks: Bronx-Born Ranger Inspires Young Parkgoers

Meet the Bronx-Born Ranger Inspiring Young Parkgoers

National Parks at 100
Dissolving Battery Could Help Spies, Environment

Dissolving Battery Could Help Spies, Environment

Tech News
Among Both Visitors and Staff, National Park Service Looks to Grow Diversity

Park Service Wants More Diverse Visitors — and Staff

U.S. news
Sleepless for Sea Turtles: Padre Island Scientist's Devotion Pays Off

Sleepless for Sea Turtles: Scientist's Devotion Pays Off

National Parks at 100
Lead in Your Water: Are Federal Tests Missing Poison in the Pipes?

Lead in Your Water: Are Federal Tests Finding It?

U.S. news

Weird Science

Video
Caught On Camera: Raccoons Rattle Homeowner Caught On Camera: Raccoons Rattle Homeowner Caught On Camera: Raccoons Rattle Homeowner

Caught On Camera: Raccoons Rattle Homeowner

U.S. news
Eight Weird Things That Have Shown Up on Weather Radar
Video

Eight Weird Things That Have Shown Up on Weather Radar

30 seconds to know
Fish Can Recognize Your Face. Really.

Fish Can Recognize Your Face. Really.

Science News
Feeding Antibiotics to Farm Animals May Worsen Climate Change

Here's How Cow Antibiotics May Affect Climate Change

Health news
Passenger Jet Creates Beautiful Rare Rainbow
Video

Passenger Jet Creates Beautiful Rare Rainbow

Weather
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