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The Ross Ice Shelf at the Bay of Whales. Michael Van Woert, NOAA

Scientists Study Ice Shelf by Listening to Its Changing Sounds

By Marlene Cimons

Researchers monitoring vibrations from Antarctica's Ross Ice Shelf were flabbergasted not long ago to hear something unexpected—the ice was "singing" to them. "We were stunned by a rich variety of time-varying tones that make up this newly described sort of signal," said Rick Aster, professor of geosciences at Colorado State University, one of the scientists involved in the study.

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5.9 Magnitude Earthquake Strikes Disaster-Plagued Haiti

Northern Haiti is reeling after a 5.9 magnitude earthquake on Saturday and a 5.2 magnitude aftershock on Sunday.

"I urge the population to keep calm," Haitian President Jovenel Moïse tweeted Saturday. "The [disaster] risk management system and the regional branches of the Civil Protection are on standby to assist the inhabitants of the affected areas."

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1,400 Dead, 70,000 Homeless After Earthquake and Tsunami in Indonesia

Indonesia's devastating earthquake-tsunami combo last week has left 70,000 people homeless in the city of Palu, CBS News reported Thursday.

The death toll has climbed to more than 1,420 people since Friday, when the 7.5 magnitude earthquake and the 18-foot tsunami it triggered struck the island of Sulawesi.

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Earthquake and tsunami devasted neighborhood in Palu, Indonesia's Central Sulawesi on Oct. 1. JEWEL SAMAD / AFP / Getty Images

844 Dead After Earthquake and Tsunami Devastate Indonesia

Eight-hundred and forty-four people have been confirmed dead after a devastating earthquake and tsunami combo struck the Indonesian city of Palu on the island of Sulawesi Friday, CNN reported Monday.

The 7.5 magnitude earthquake was followed by a three foot tsunami that entered a narrow bay and swept past the town of Dongalla and into Palu. A tsunami warning was in place following the earthquake, but was rescinded before the tsunami actually struck because the water seemed to have receded. National Disaster Mitigation Agency spokesman Sutopo Purwo Nugroho told BBC News that the Indonesian section of a Pacific-wide warning system following the 2004 tsunami suffered from lack of funding.

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Major Earthquake Strikes Japan in Latest String of Natural Disasters

A powerful earthquake rocked Hokkaido, Japan in the early hours on Thursday, triggering landslides, destroying roads and buildings and left the northern island's 5.3 million residents without power.

The 6.7-magnitude quake struck at 3:09 a.m. local time at a depth of 40 kilometers (24 miles), according to the Associated Press.

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A water impoundment at a drill pad in the Fayetteville Shale gas play of Arkansas. Bill Cunningham / USGS

Injecting Wastewater Underground Can Cause Earthquakes Up to 10 Kilometers Away

By Emily Brodsky

Earthquakes in the central and eastern U.S. have increased dramatically in the last decade as a result of human activities. Enhanced oil recovery techniques, including dewatering and hydraulic fracturing, or fracking, have made accessible large quantities of oil and gas previously trapped underground, but often result in a glut of contaminated wastewater as a byproduct.

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A Hyundai damaged from an earthquake in Pohang, South Korea on Nov. 15, 2017. Sim1992 / CC BY-SA 4.0

South Korea's Most Damaging Earthquake Linked to Geothermal Fracking

One of South Korea's largest earthquakes was likely triggered by hydraulic fracturing associated with geothermal energy production, according to two studies published Thursday in the journal Science.

The 5.5-magnitude temblor that struck the city of Pohang on Nov. 15, 2017 was the second most powerful on record and its most damaging, leaving the infrastructure in ruins, injuring dozens of people and leaving about 1,500 homeless.

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A 4.3 magnitude earthquake near Perry, Oklahoma on April 9. USGS

Four Earthquakes Rattle‬ Northern ‪Oklahoma in 24 Hours

A 4.3 magnitude earthquake that rattled Northern Oklahoma early Monday morning was the fourth temblor to strike the region in the past 24 hours.

In fact, a dozen-plus earthquakes, ranging from magnitudes of 2.5 to 4.6, have been recorded in the Sooner State since Friday, according to the U.S. Geological Survey.

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USGS recorded two 4.2-magnitude earthquakes near Enid, Oklahoma on March 4.

Two 4.2-Magnitude Earthquakes Rattle Northern Oklahoma in a Single Evening

Two 4.2-magnitude earthquakes struck near Enid in northern Oklahoma Sunday at 5:17 p.m and 9:40 p.m., according to the U.S. Geological Survey (USGS). They are the largest recorded this year so far and even felt in neighboring Kansas.

The large quakes were followed by two smaller ones around the same area early Monday. The first was a magnitude 2.7 followed by 12:35 a.m. then magnitude 2.6 at 6:16 a.m.

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