Micro-seismic activity has been produced from people cheering or dancing at sporting events, concerts, and other large gatherings, but scientists can easily distinguish these vibrations from natural earthquakes using seismometers.

Earthquakes of identical magnitudes are unlikely to cause equal damage because magnitude only measures energy released, and earthquake severity depends on environmental factors, such as local architecture and geological conditions.

Visualize the power and frequency of earthquake magnitudes.

View the 10 largest earthquakes ever recorded as of 2025.

Some earthquakes can produce smaller tremors called boomerang earthquakes, which travel in the opposite direction and ripple back to the original earthquake's source.

Rather than predicting them in advance, earthquake early warning systems detect tremors moments after they begin and send notifications that reach users before the seismic activity does.

The world's largest earthquake simulator is an 800-ton shake table facility in Miki, Japan, which was built to test the resilience of structures after the 1995 Kobe earthquake killed over 6,000 people.

What makes the Earth shake?

Researchers are demystifying the science of earthquakes—from their origins deep within the Earth to the scales that measure their strength. This article, which was part of a series of weekly reports from Cornell University, serves as a guide to...

A magnitude 25 earthquake would release enough energy to destroy the sun, while a particle of dust drifting onto a table would have a magnitude of about -15.

Tsunamis are caused by earthquakes of magnitude 7.0 with hypocenters within 100 kilometers of the seafloor, large sections of which can be significantly shifted to displace water suddenly.

Enhanced geothermal power systems can trigger earthquakes by injecting fluid into rock, increasing subterranean pressure.

The four types of seismic waves—vibrations that carry energy generated by geological events, such as earthquakes—are categorized as body or surface waves.

If, not when: An earthquake is destined to destroy the Pacific Northwest.

When the Cascadia fault line ruptures, it could be North America’s worst natural disaster in recorded history. Read a deep dive into the history of the region and the potential impact of the eventual seismic boom.

Tectonic earthquakes are caused by tectonic plates sliding past one another at fault zones, deforming rock through friction as energy builds like a stretched rubber band.

Reported earthquake magnitudes often change because initial values are based on limited information, whereas revised magnitudes account for factors such as fault size, rupture duration, and seismic wave behavior.

Watch a pyromusical display to AC/DC’s “Thunderstruck”

The same principles behind fireworks also power the types of pyrotechnic displays in some live events. Here, you can see an application of the technology in a pyromusical set to rock band AC/DC’s iconic song, “Thunderstruck.”

BTS' 2026 Seoul concert turned the city into a distributed sound system

The K-pop band's first show after six years turned Gwanghwamun Square into a large open-air venue. Scientists present measured sound levels and noted that the music carried well across vast distances, thanks to good design of the sound system.

Supermassive black holes create pressure waves, detectable as extremely low sounds

Space is largely silent because it lacks a medium for sound waves. Some Mars rovers capture sounds of wind, though the sounds are too low to hear. Through sonification, astronomical data can be translated into hearable sounds for broader engagement.

Scientists determine earthquake locations by comparing how long it takes different seismic waves to be detected at three stations around the world, from which an origin, or hypocenter, can be triangulated.

The Richter scale was calibrated to crustal and mantle properties in Southern California and was intended only to quantify earthquakes there.

Techniques to earthquake-proof a building include the use of counterweights, such as a massive column or pendulum, to dampen the impact of seismic activity and isolating a building's structure from its base.

Katy Perry's 2015 halftime show generated many memes in the age of social media

During Super Bowl XLIX, Katy Perry's halftime performance—especially the unscripted "Left Shark"—went viral, becoming one of the first Super Bowl shows to fully translate into memes across social media platforms.

Super Bowl halftime shows reliably drive massive music sales spikes

Since Michael Jackson’s 1993 performance, halftime headliners have seen major increases in sales and streams—from Prince to Lady Gaga. Kendrick Lamar’s 2025 show was no exception, as it was the most-watched halftime performance on record.

The Grateful Dead pioneered a massive 3-story, 75-ton, 600-speaker sound system that revolutionized live audio in the early 1970s.

Stonehenge may have functioned as an echo chamber designed to keep ceremonies secret from outsiders.

Acoustics researcher Trevor Cox discovered that Stonehenge acts like a concert hall, reflecting and amplifying sound. This video shows Cox demonstrating the effect using a scale model inside a soundproof studio.

In July 1979, tens of thousands of people rioted on the Chicago White Sox field during 'Disco Demolition Night,' a promotional event that advertised the public burning of the genre's hit records.

Disposal wells for fracking wastewater have been linked to spikes in seismic activity

A study of all such underground wells in the central and eastern US found that they were 1.5 times more likely to be associated with earthquakes than oil recovery wells. The link between fluid injection and earthquakes was strongest at disposal wells where fluid was injected quickly.

Predicting earthquakes is difficult because different rock types can withstand different amounts of stress before breaking and melt at different temperatures within Earth's interior, introducing uncertainty into predictive models.

Just as light bends at different angles as it travels through different materials, seismic waves move in different directions through Earth's interior, revealing the presence of layers with varying properties.

The first Super Bowl halftime show featured marching bands and two men on jetpacks

At Super Bowl I, the halftime show featured college marching bands, a rifle drill team, and two performers flying jetpacks, in an era before music stars and spectacle defined the break.

Watch a tsunami warning system provide real-time alerts across the Pacific

This visualization of the GUARDIAN monitoring software depicts its detection and transmission of natural hazard signals from the magnitude 8.8 Kamchatka Peninsula earthquake on July 29, 2025. The first detections occurred 32 minutes before the earliest tidal impacts, demonstrating the system's potential to save lives by expanding response time windows.

Geological tremors on the moon provide evidence that it is shrinking

Apollo seismometers have collected moonquake data, which scientists have analyzed to map the moon's interior and reveal that fault slips producing tremors are the result of sublunar cooling and contraction. It also revealed that the moon's inner core is about 500 kilometers (311 miles) across.

Music may give some of us the chills and goose bumps—perhaps because it shocks us

The science is still unsettled about why music can trigger a chill down your spine, formally known as frisson, but one theory is that anything surprising to the nervous system—including sudden beat drops or unexpected harmonies—stimulates a type of alarm response that gives rise to this feeling.

Could the world's largest solar storm happen again?

In 1859, the world witnessed the most intense solar storm in recorded history. The electromagnetic deluge of dust and gas lit up the night sky and sparked fires, disrupting Earth's magnetic field and putting on a show for the millions. If a storm with a similar intensity today occurred, scientists believe it would be catastrophic for our communications systems. Learn what would happen if the Carrington Event happened again here.

The Pacific Northwest's last 'really big one'

More than 300 years ago, a shift in the Cascadia subduction zone caused the seafloor near the Pacific Northwest coast to drop by three to six feet. The force generated a massive tsunami that traveled across the Pacific and devastated Japan.

Janet Jackson's 2004 halftime show sparked a broadcast backlash

During Super Bowl XXXVIII, Justin Timberlake tore part of Janet Jackson's costume during the halftime finale, exposing her breast. The moment triggered widespread controversy, negative career repercussions for Jackson, FCC fines, and stricter standards for live television broadcasts.

The strongest recorded geomagnetic storm in history created auroras near the equator

On Sept. 1, 1859, the Carrington Event—named after the astronomer who observed the preceding solar flare—saw a massive coronal mass ejection strike Earth, disrupting telegraph systems, sparking electrical fires, and reportedly illuminating the night sky enough to allow newspapers to be read at night.

'Silent' fireworks are not entirely noise-free

By using a reduced amount of flash powder—the ingredient responsible for the loud explosions that fireworks make—"silent" fireworks produce displays between 70 and 90 decibels, rather than the approximately 175 decibels heard in professional displays.

Sound can shatter glass if its frequency matches the material's natural vibrations

The sound made by an object when struck is its resonant frequency, which is the sound made when energy is dissipated. Providing energy at that frequency amplifies the vibrations, rather than allowing them to dissipate, which can deteriorate the object's structural integrity.

A history of the rare, chaotic moments when MLB batters charge the pitcher on the mound

They typically occur when a pitcher has slung a pitch a little too close to the batter—though the exact causes vary, from quick tempers to longstanding grudges. No definitive account of these infrequent but highly visible incidents has existed, so sportswriter Jon Bois compiled data on 264 such moments between 1950 and 2025. The resulting 23-minute video explores the rich narratives leading to these charged events.

From 2018 to 2022, NASA's InSight Lander used three primary instruments to measure Martian seismic activity, subterranean heat flow, and wobbles of its north pole.

Portugal's 1775 earthquake is considered Europe's first modern natural disaster.

Engineering tall structures requires managing wind, earthquakes, and other destabilizing factors

Reinforced concrete, energy dampers, braced frames, flexible structures, and aerodynamic decks were among the methods implemented when building structures such as the Shanghai Tower, the Texas Super Skyscraper, and the South Rangitīkei Viaduct.

Crackling, popping, and rustling sounds have been reported during auroras

At the altitudes where auroras take place—between 100 and 300 kilometers (62 to 186 miles)—air is not dense enough to efficiently vibrate and carry sound waves to the ground. However, one theory suggests that the geomagnetic energy behind auroras can trigger electrical discharges near the surface, which may be the cause of reported sounds.

Humans are wired to pick up on each other's emotion, making laughter contagious

The reaction plays a key role in establishing interpersonal connections and relieving stress by releasing endorphins—feel-good hormones. A 2021 study identified at least 65 animal species that produce playful sounds, such as laughter.

Prince's Super Bowl halftime show is widely considered one of the best

The 2007 performance was idiosyncratic, featuring a handful of songs by other artists (including Foo Fighters' "Best of You" and Jimi Hendrix's rendition of "All Along the Watchtower" and a torrential rainstorm. Its differences, along with Prince's legendary stage presence, have led many critics to call it the best Super Bowl halftime performance ever.

In 1984, Operation Smash Hit intentionally crashed a 239-ton train into a nuclear waste canister at 100 miles per hour to prove the canister's safety, which remained completely intact and lost just 0.29 of its 100 pounds of pressure.

'Silent' fireworks have gained more interest in recent years as a quieter celebratory option.

Audio and visual cues from "Titanic," Pink Floyd, and more can provoke goose bumps

These audio and visual snippets have been used in research studies to elicit goose bumps.

Michael Jackson's halftime show created the modern Super Bowl spectacle

In 1993, Michael Jackson's Super Bowl halftime performance prompted the NFL to extend the break and reimagine it as a must-watch event. It is widely regarded as the first modern halftime show built around a global superstar.

Pickleballs' loud 'pop' sound can reach 120 decibels, equivalent to the sound of a hammer striking a nail.