01 July 2014, 08:11 AM ET
Intersex fish have been found in three Pennsylvania river basins, suggesting that the waters may be tainted with endocrine-disrupting chemicals from agricultural runoff and treated human waste, according to a new study.
30 June 2014, 05:19 PM ET
California's rainfall year ended today, and though the final totals aren't yet official, the parched state will likely end up with one of its lowest rainfall years since the 1920s.
30 June 2014, 05:10 PM ET
Where the Sahara Desert meets the sea, winds sculpt the arid landscape in a series of parallel lines. Human activity in the form of mining is visible in a new astronaut photograph of the west coast of Africa.
30 June 2014, 03:00 PM ET
The amount of plastic littering the surface of the oceans is much smaller than expected, raising the question of where all the plastic is going.
30 June 2014, 02:42 PM ET
Extinct volcanoes on the ocean floor get squashed by tectonic plates and create tsunami earthquakes.
30 June 2014, 02:36 PM ET
Yosemite National Park celebrates its 150th anniversary today (June 30).
30 June 2014, 01:30 PM ET
Never mind the huge cost, ecological consequences and engineering difficulties involved in a newly proposed scheme to make tornado-blocking walls, weather experts say the idea is too crazy to work.
30 June 2014, 10:59 AM ET
As climate change melts sea ice, emperor penguin populations across Antarctica across Antarctica could drastically decline, with many of the colonies dropping by more than half by 2100, warn scientists.
30 June 2014, 08:02 AM ET
A photo timeline of Earth's 4.5 billion years of geologic history.
29 June 2014, 09:53 AM ET
A new database of dinosaur-era flying reptiles called pterosaurs allows users to map the location of fossils on Google Earth. Paleontologists want to use the database, called PteroTerra, to uncover evolutionary trends.
29 June 2014, 01:56 AM ET
Volcanic eruptions are as old as the planet itself; they inspire awe, curiosity and fear and demonstrate the dynamic internal activity of the Earth.
27 June 2014, 03:54 PM ET
A new study finds there were more than twice as many big earthquakes in the first quarter of 2014 as compared with the average since 1979, but researchers attribute the increase to random chance.
27 June 2014, 02:39 PM ET
The twisting and turning San Andreas Fault is reveals Nature's power and beauty, as it's the result of colliding tectonic plates. The geological forces have created some mystical sights to behold.
27 June 2014, 02:32 PM ET
Do you know what to do if a storm hits this hurricane season?
27 June 2014, 10:31 AM ET
Three new volcanoes were discovered in Australia using satellite images and NASA topography maps.
27 June 2014, 08:31 AM ET
A strange meteorite from Sweden is a new kind of space rock never before seen on Earth, a study reports. The baseball-sized gray blob could be the long-sought "other half" of an asteroid belt collision 470 million years ago.
26 June 2014, 05:53 PM ET
Scientists have unearthed evidence for the oldest animal-built reef in the world, which was built by an ancient filter feeder called Cloudina some 550 million years ago.
26 June 2014, 04:15 PM ET
A new report that graded the water quality of beaches across the United States found that 10 percent of the country's shores are contaminated or polluted. The report also identified 35 "superstar" beaches and 17 "repeat offenders."
26 June 2014, 02:00 PM ET
A dramatic slowdown in deep ocean currents matches a major reset in Earth's ice ages about 1 million years ago, new evidence from the South Atlantic seafloor suggests.
26 June 2014, 01:12 PM ET
Now that summer is here, a trip to the beach should bring familiar smells: seawater, sunscreen and, depending where you live, sewage. One in ten recreational beaches in the United States isn't fit for swimming, according to a new report.
26 June 2014, 03:07 AM ET
Even in a town with a building built literally from coal, energy alternatives are emerging.
25 June 2014, 05:00 PM ET
When the time comes to shed their skin, certain beetle larvae in Greece scout out a sleeping snail, break into its shell, eat the victim alive and squat in its home for days.
25 June 2014, 04:41 PM ET
Chances are you've tried to hide a runny nose and cough when you're sick at the office or around family members, and a new study finds animals do something similar.
25 June 2014, 01:43 PM ET
Bright shocks of blue in the Utah desert are mining evaporation ponds, dyed the brilliant color to promote the absorption of sunlight. The mines produce potash, an ingredient in fertilizer.
25 June 2014, 09:34 AM ET
Six rare kittens were recently born at a Scottish zoo, and hidden cameras caught the creatures' first steps outside their nest box.
24 June 2014, 11:17 PM ET
A new report by the Risky Business Project quantifies the impacts of climate change on the U.S. economy.
24 June 2014, 09:18 PM ET
Matter is the “stuff” of the universe. There are five known phases, or states, of matter: solids, liquids, gases, plasma and Bose-Einstein condensates.
24 June 2014, 04:07 PM ET
The way snow dances around wind turbines is shedding light on mysteries of how air turbulence behaves, a new study reveals. The research could help improve the efficiency and reliability of wind turbines, scientists say.
24 June 2014, 02:25 PM ET
A new image of the San Quintín glacier of Chile shows less ice than in previous years. Like many glaciers in the Andes, this river of ice is retreating rapidly.
24 June 2014, 01:18 PM ET
School hallways provided scant protection during the 2013 EF5 tornado in Moore, Oklahoma. Now, state and school officials are trying to make schools safer places to be during extreme weather.
24 June 2014, 01:50 AM ET
We wait in anticipation of droughts and floods when El Niño and La Niña are forecast but what are these climatic events?
23 June 2014, 07:32 PM ET
Mysterious stone spheres in Costa Rica and white chalk cliffs in Denmark are among the newest World Heritage Sites designated by UNESCO. The sites are chosen for their universal value and natural and historical importance.