28 July 2014, 08:40 AM ET
In 2010, excavators discovered a wooden ship buried under the site of the World Trade Center in Lower Manhattan. A new tree ring study reveals that the vessel was likely built in 1773, or soon after, in a small shipyard around Philadelphia.
28 July 2014, 12:02 AM ET
The space rock that wiped out most of the dinosaurs may have had a colossal case of bad timing. If the impact had occurred a few million years earlier or later, more of the majestic beasts may have survived, scientists say.
27 July 2014, 08:51 PM ET
We are inclined to think that trees are a renewable natural resource. Yet precious hardwood trees have already been almost completely logged out from many countries across the tropics.
25 July 2014, 04:43 PM ET
The next big earthquake in Southern California could be smaller than expected, according to researchers who are rewriting the history of earthquakes on the San Andreas Fault.
25 July 2014, 11:31 AM ET
Researchers observed that a certain species of squirrel in New York City adapts its behavior to that of humans by avoiding unnecessary contact with people and going about its day uninterrupted.
24 July 2014, 07:54 PM ET
The obsessive attention to the state of the latest El Niño comes from the major global impacts it can have.
24 July 2014, 05:56 PM ET
The sky is thick with smoke in central Washington, as the state's largest wildfire in recorded history leaves a charred trail of burned homes and blackened trees.
24 July 2014, 05:36 PM ET
Four astronauts are currently living in a school-bus-size habitat that is anchored 62 feet (19 meters) underwater for a nine-day mission to test tech for future space expeditions.
24 July 2014, 05:13 PM ET
The Southwest's underground water supplies are shrinking faster than they're being replenished.
24 July 2014, 04:46 PM ET
Eerie radio signals called whistlers have been detected from volcanic lightning for the first time.
24 July 2014, 01:34 PM ET
Huge swaths of land, including homes and forests, were lost to raging fires in July 2014. Sy Stepanov of Chelan HD sent out his drones for a birds eye view of the destruction. Help fire victims here.
24 July 2014, 01:29 PM ET
The low-flying lens of Chelan HD’s drone catches a group of deer walking through the ash of their former forest home. Destroyed human-homes and a local relief effort are seen as well. Help fire victims here.
24 July 2014, 12:58 PM ET
According to the National Climate Assessment’s Mitigation humans need to quickly ween off fossil fuels in favor of alternative energy sources to reduce what could be a 10°F average temperature increase by 2100.
24 July 2014, 10:38 AM ET
A rusty, barnacle-covered anchor that may be the lost anchor from an 18th century voyage around the world was pulled from the Puget Sound last month. Now, the sunken treasure will undergo a long cleaning.
23 July 2014, 03:28 PM ET
Today marks the 42nd anniversary of the Landsat program, which provides the longest continuous record ever of observations of Earth's landmasses. Landsat 1 launched on July 23, 1972.
23 July 2014, 03:27 PM ET
A group of people in the Amazon who had been living without any contact to the outside world suffered an outbreak of the flu after fleeing attacks on t, Brazilian authorities say.
23 July 2014, 01:01 PM ET
People aren't the only polluters — trees emit harmful compounds, too, as a recent map reveals. However, tree emissions would not be harmful were it not for the human emissions that react with these compounds, causing ozone pollution.
23 July 2014, 11:52 AM ET
NASA's first Landsat mission launched in July 1972. Seven more satellites have been launched since. Two of these, Landsat 7 & 8, are still active. The program acquired science imagery of natural disasters, urban change, water, ice, and farming.
22 July 2014, 03:14 PM ET
Created by lightning, ‘whistlers’ travel along Earth's magnetic field lines from hemisphere to hemisphere. Jupiter’s charged particles ‘sing’ across its magnetosphere (recorded by Voyager).
-- 'Whistling' Volcanic Lightning: http://goo.gl/kKhlEk
22 July 2014, 11:54 AM ET
Scandinavia and the southern Baltic Sea light up in a new photograph taken from the International Space Station in June. The picture gives a detailed view of the coastline and delicate barrier islands.
22 July 2014, 11:10 AM ET
Four astronauts traded in their spacesuits for scuba gear yesterday (July 21) and embarked on a nine-day mission at the bottom of the sea as part of NASA's Extreme Environment Mission Operations (NEEMO) project.
22 July 2014, 09:58 AM ET
A sunrise photograph shows an unusual volcano sending ash toward a conjunction of Venus, Jupiter and the moon. Tanzania's Ol Doinyo Lengai is the only active volcano of its kind.
22 July 2014, 09:01 AM ET
Recent satellite data suggests that Antarctica's sea ice is expanding even as the Arctic heads toward an ice-free future. But a new study argues that much of the trend is a glitch in the data, not a real observation.
21 July 2014, 03:50 PM ET
Most Pacific islands will see dramatic change with sea level rise. Some low-lying islands could cease to exist. Many of Hawaii's roads and airports, sited on volcanic lowlands, are at risk from higher seas and stronger oceanic storm surges.
21 July 2014, 03:39 PM ET
Satellites have captured images of the scattered debris and charred wreckage where Malaysian Airlines Flight MH17 crashed in eastern Ukraine last week, killing all 298 people on board.
21 July 2014, 03:36 PM ET
Bill Nye the Science Guy gave a lecture at Irving Plaza in New York City on the beginnings of his popular kids' TV show and the future of space exploration.
21 July 2014, 03:16 PM ET
Eating a burger takes a big toll on the environment, reports one of the most comprehensive studies to date on livestock management in the United States.
21 July 2014, 01:33 PM ET
As the number of offshore wind farms continues to grow, the farms could affect both seals and their prey, say scientists who discovered the animals may use the giant wind farms as hunting grounds.
21 July 2014, 11:50 AM ET
For the first time in more than 30 years, a litter of wolf pups was born in the wild in Mexico, wildlife authorities announced. The birth of the first wild litter marks an "important step in the reintroduction program" for the species.
21 July 2014, 11:41 AM ET
The astronauts who first walked on the moon also got some beautiful views of Earth during their journey. A 'Blue Marble' Earth image from July 16, 1969 shows the planet on the day of Apollo 11's launch.
21 July 2014, 11:22 AM ET
In a first study of its kind, researchers have linked dredging to increased sickness in nearby coral reefs. The researchers examined the health of corals around Barrow Island, off the west coast of Australia.
20 July 2014, 02:17 PM ET
New researcher reveals that bewildering rock formations may owe their shapes to how rock can strengthen when squashed from above, scientists say.