A seismologist thinks natural phenomena could explain the Summerville Light and other mysteries around a South Carolina locale.

Experts said they were “blind” to the Indian Ocean tsunami in 2004. Twenty years later, working toward a world without tsunami deaths is a challenge.

Scientists are deploying monitors at the volcanic Mount Adams in Washington State, after a spike in seismic activity.

The U.S. Geological Survey (USGS) said Mount Adams typically experiences an earthquake every two to three years, but in September, there were six earthquakes alone, marking the most in a single month since monitoring began in 1982.

The earthquakes were monitored by the USGS Cascades Volcano Observatory (CVO) and Pacific Northwest Seismic Network (PNSN) and ranged in magnitudes from 0.9 to 2.0. None of the earthquakes were felt at the surface, the USGS said.

With only one seismic station near the volcano, the USGS said monitoring capabilities are limited.

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CVO and PNSN plan to install temporary seismic stations near Mount Adams to help detect smaller earthquakes while acquiring better estimates of size, location and depth. The data will help scientists assess the significance of the increased seismic activity near the volcano.

With permission from the U.S. Forest Service, CVO will place the temporary stations south and southwest of Mount Adams. Once activated, the data will be transmitted to CVO and PNSN in real-time.

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Despite the spike in seismic activity, the USGS says there is no indication that there is cause for concern and the alert level and color code for Mount Adams remains at Green and Normal.

Mount Adams is located in south central Washington, nearly 50 miles west-southwest of Yakima, Washington.

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In the north-south trending Mount Adams-King Mountain volcanic field of over 120 smaller volcanos, Mount Adams is the most prominent summit. It is also the second-tallest volcano in Washington and is the state's largest active volcano in volume and area, according to the USGS.

The agency said over the past 12,000 years, there have been four lava flows that started on the apron of the volcano and two vents along the south ridge. The flows have typically only traveled a few miles from their vents.

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The last time Mount Adams erupted was between 3,800 and 7,600 years ago, the USGS added.

But one of the biggest threats to people who live near the volcano are lahars, or muddy flows of rock, ash and ice that rush downstream like fast flowing concrete.

The summit, which is covered in ice, also covers up large volumes of hydrothermally weakened rock, which, if weakened by future landslides, could generate lahars.

Scientists investigating the asteroid that wiped out dinosaurs after slamming into the Earth 66 million years ago have released a new study suggesting that it formed "beyond the orbit of Jupiter." 

The findings published in Science on Thursday say that the researchers made their determination after examining the geological remains of the impact in modern day Chicxulub, Mexico. 

The team, led by Mario Fischer-Gödde of the University of Cologne in Germany, "measured ruthenium isotopes in the impact deposits and compared them with multiple classes of meteorites, which represent potential impactor compositions," according to a summary of the study. 

"They found that the Chicxulub impactor was a carbonaceous asteroid that formed in the outer Solar System," it continued. "Additional measurements of five other impacts showed that those were due to silicate asteroids that formed in the inner Solar System." 

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An abstract of the study also said that the impact of the asteroid at Chicxulub produced "a global stratigraphic layer that marks the boundary between the Cretaceous and Paleogene eras." 

"That layer contains elevated concentrations of platinum-group elements, including ruthenium," it continued, adding that the scientists’ data indicates the asteroid that struck Mexico had "formed beyond the orbit of Jupiter." 

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"So far, Chicxulub... seems to be a unique and rare case of a carbonaceous-type asteroid hitting Earth," Fischer-Gödde told The New York Times, which reports that previous research has suggested similar findings regarding the asteroid’s true origin. 

"Without this impact, what would our Earth look like today?" Fischer-Gödde added. "We should probably value, a bit more, that we are around and this is maybe a lucky coincidence that everything came to place like it is today."