Man-made earthquakes, a side effect of some high-tech energy drilling, cause less shaking and in general are about 16 times weaker than natural earthquakes with the same magnitude, a new federal study found.

People feeling the ground move from induced quakes — those that are not natural, but triggered by injections of wastewater deep underground— report significantly less shaking than those who experience more normal earthquakes of the same magnitude, according to a study by U.S. Geological Survey geophysicist Susan Hough.

One hand clinging to his boat's gunwale, Harun Muhammad submerges himself, eyes and ears wide open underwater as he "listens" for fish sounds emanating from the blue depths.

Harun is one of Malaysia's last "fish listeners," and he and his apprentice son Zuraini are believed to be the only active practitioners of this mysterious and dying local art.

More elephants in Africa are being killed by poachers than are born each year, and the problem may be worse than previously understood, according to the most detailed assessment yet.

Using a newly refined approach to estimate elephant deaths, developed at Kenya's Samburu National Reserve, researchers said Africa's elephant population is declining at a rate of about two percent annually.

Orbital Sciences Corporation's unmanned Cygnus cargo ship disintegrated as planned Sunday as it re-entered Earth's atmosphere after a month-long resupply mission to the International Space Station.

The spacecraft had been released from the orbiting lab on Friday at 6:40 am (1040 GMT), and then stayed in independent orbit for two days, before firing its engines and pushing into Earth's atmosphere.

An archaeological dig at a Colonial military site in the southern Adirondacks of New York has turned up thousands of artifacts, from butchered animal bones to uniform buttons, along with a lime kiln used to make mortar for a British fort that was never completed.

The six-week project that ended Friday at the Lake George Battlefield Park also uncovered a section of a stone foundation and brick floor of a small building likely constructed alongside a barracks in 1759, during the French and Indian War.

Orbital Sciences Corporation's unmanned Cygnus cargo ship left the International Space Station Friday on its way to a fiery re-entry into Earth's atmosphere.

The spacecraft was released from the orbiting lab at 6:40 am (1040 GMT), NASA said in a live broadcast of the event.

Ramona Yesenia stood in her town square with two empty jugs, waiting for water to replace the municipal supply contaminated by a chemical spill that turned Mexico's Sonora river orange.

Yesenia is one of 20,000 people left without water since a massive sulfuric acid leak last week at the Buenavista copper mine in northwestern Mexico, one of the largest in the world.

After more than a year of public criticism of its treatment of killer whales, SeaWorld said Friday that it will build new, larger environments at its theme parks and will fund additional research on the animals along with programs to protect ocean health and whales in the wild.

The Orlando, Florida, company said the renovations have been in the works for some time and that they are not a response to the documentary "Blackfish" or the criticism of the company that followed the release of the film.

Seven grains of stardust that are believed to come from outside our solar system are revealing new hints about what the universe is made of, scientists said Thursday.

Some are fluffy like snowflakes, not dense like experts expected, according to the study in the US journal Science that describes the first close look at what astronomers have only been able to view from afar -- until now.

More than two-thirds of the recent rapid melting of the world's glaciers can be blamed on humans, a new study finds.

Scientists looking at glacier melt since 1851 didn't see a human fingerprint until about the middle of the 20th century. Even then only one-quarter of the warming wasn't from natural causes.