01 July 2015, 12:38 PM ET
Fireworks are a beloved tradition of the Fourth of July, but the colorful displays also bring a spike in air pollution, a new study shows.
01 July 2015, 05:43 AM ET
The discovery of helium leaking from the Earth from oil wells along a fault in Southern California reveals that the Newport-Inglewood fault is deeper and more complicated than previously believed.
30 June 2015, 11:14 PM ET
Euler's Identity is a remarkable equation that comprises the five most important mathematical constants.
30 June 2015, 02:47 PM ET
A dark, moonless sky is awash in light radiating from an aurora over Antarctica in a new image released by NASA.
29 June 2015, 02:15 PM ET
The court ruled that the EPA did not properly account for the costs of reducing toxic emissions.
29 June 2015, 08:55 AM ET
A solar-powered plane able to fly in sunshine or darkness without using any fuel took off today (June 29) on a planned 120-hour flight across the Pacific Ocean, from Nagoya, Japan, to Kalaeola, Hawaii.
29 June 2015, 07:32 AM ET
This year has a leap second, set to take place on Tuesday (June 30) at 7:59:60 p.m. EDT. The reason? Earth's rotation is slowing down, thanks to a kind of braking force caused by the gravitational tug of war between Earth, the sun and the moon.
26 June 2015, 11:25 AM ET
The continents may have first risen high above the oceans of the world about 3 billion years ago, researchers say. That's about a billion years earlier than geoscientists had suspected for the emergence of a good chunk of the continents.
26 June 2015, 09:43 AM ET
Deep in the Red Sea, beyond the reach of most scuba divers, coral reefs are putting on a glowing, colorful show, scientists have discovered.
26 June 2015, 09:40 AM ET
Coral reefs that glow in an impressive array of fluorescent colors were discovered in the Red Sea.
26 June 2015, 02:32 AM ET
From world-class wilderness to an abandoned nuke site, the Everglades holds tremendous mystery — all at threat from development.
25 June 2015, 05:35 PM ET
When large chunks of ice break off of a glacier and plop with a giant splash into the chilly water, the result can be lots of thunderous shaking.
25 June 2015, 12:28 PM ET
One by one, states are deciding sharks are more important than soup.
25 June 2015, 11:40 AM ET
Now, even the most die-hard couch potatoes can summit one of the world's most imposing rock faces, El Capitan in Yosemite National Park, using Google Street View.
25 June 2015, 09:18 AM ET
Tornadoes, fog and every type of weather in between take center stage in the new NOAA Weather in Focus photography contest.
25 June 2015, 07:30 AM ET
The first Weather in Focus photo contest by the National Oceanic and Atmospheric Administration (NOAA) has produced some stunning shots, from a massive funnel cloud to raindrops decorating the underside of a leaf.
24 June 2015, 07:49 AM ET
California's four-year-long drought is helping fuel its first major forest fire of the year, a blaze that is engulfing federal land about 80 miles (130 kilometers) east of Los Angeles.
23 June 2015, 04:39 PM ET
The climate may change for the better if nations continue to ramp up efforts.
23 June 2015, 02:58 PM ET
In a first-of-its-kind project using cameras mounted onto the fins of deep-sea sharks, researchers have made surprising discoveries about what keeps these mysterious creatures afloat.
23 June 2015, 02:46 PM ET
Researchers at the University of Hawaii and the University of Tokyo studied sharks' swimming habits using fin-mounted cameras.
23 June 2015, 10:20 AM ET
Luminous, filamentous noctilucent clouds glow over the North Pole in new NASA images.
21 June 2015, 08:41 AM ET
The desert ironwood tree, Olneya tesota, can be found growing only in the Sonoran Desert of Mexico, California and Arizona. Check out these spectacular photos of ironwoods.
21 June 2015, 12:54 AM ET
This Sunday (June 21) marks the summer solstice, the official start of summer in the Northern Hemisphere.
19 June 2015, 10:00 PM ET
Temperatures rise and the livin' is easy.
19 June 2015, 08:24 PM ET
U.S. officials destroyed more than 1 ton of illegal ivory in New York City on June 19, 2015.
19 June 2015, 07:32 PM ET
Some 1,500 people gathered in New York City's Times Square today to witness the destruction of 1 ton of confiscated ivory — a move intended to demonstrate to the world that objects made from poached ivory have no value.
19 June 2015, 02:00 PM ET
Scientists found that species are dying off more than 100 times faster than they would without human activity.
18 June 2015, 03:50 PM ET
Pope Francis just released a long document on man's relationship to the Earth, but will his call for action on climate change have an impact?
18 June 2015, 02:49 PM ET
Pope Francis' climate change encyclical has been released. Here are 4 main points from it.
18 June 2015, 02:10 PM ET
Oklahoma is not known for its earthquakes, but in recent years episodes of ground shaking have surged, with the U.S. Geological Survey releasing a rare warning last May saying the risk of a damaging earthquake in Oklahoma had significantly increased.
18 June 2015, 01:52 PM ET
In a public display against elephant poaching, U.S. officials will pulverize a huge store of illegal ivory tomorrow (June 19) in Times Square, in the heart of New York City.
18 June 2015, 07:22 AM ET
Researchers have found that the vast majority of brimstone — reverently referred to in biblical times as "burning stone," but now known more commonly as sulfur — dwells deep in the Earth's core.
17 June 2015, 07:02 PM ET
The planet is crawling with tiny spies: Hidden undersea microphones, instrument-clad satellites and infrared cameras are listening, watching and smelling all the action on planet Earth, from a migrating whale to a meteor crash.
16 June 2015, 07:50 PM ET
Tropical Storm Bill lurks menacingly near the coast of Texas in a photo taken from space yesterday (June 15).
16 June 2015, 06:45 PM ET
The incredible energy unleashed by the magnitude-7.8 earthquake that hit Nepal on April 25 moved Mount Everest, the world's tallest peak, more than an inch to the southwest.
16 June 2015, 05:33 PM ET
Three days of GOES-East satellite imagery has been compiled to show the progress of the storm over the Gulf of Mexico from June 14th-16th, 2015. It makes landfall on the Texas coast on June 16th.