A team of researchers found a massive slab of water ice on Mars, measuring 40 meters thick and covering an area equivalent to California and Texas combined. Meanwhile, scientists have long struggled to study the Earth's remote mantle using seismic wave analysis, but new research offers new insights into this complex process.
Scientists have found a way to detect internal damage in Utah's natural arches that could lead to their collapse. A study also reveals how a 16th-century Italian earthquake changed the course of the Po River over thousands of years. Researchers explore the effects of smaller rivers from Canada's Arctic islands on the North Atlantic.
A new study enhances climate model accuracy, while a modeling tool facilitates high-resolution calculations of Earth's elastic response. Five new research papers explore topics including tropical cyclones in a cooler climate and exotic crust formation on Mercury.
The Galápagos penguin population has doubled over the past 30 years due to changes in wind currents and ocean temperatures. This expansion of the cold pool, where sea surface temperatures are below 22 degrees Celsius, has bolstered algae and fish numbers, supporting the penguin population.
A new study suggests that the world's deserts may be storing significant amounts of climate-changing carbon dioxide, with estimates suggesting up to 20 billion metric tons stored in underground aquifers. This discovery could improve models used to predict future climate change and enhance calculations of the Earth's carbon budget.
The American Geophysical Union awards top honors to journalists Andrew Revkin, Douglas Fox, and Sandi Doughton for their exceptional science reporting. Revkin receives the Robert C. Cowen Award for his climate change coverage, while Fox wins the Walter Sullivan Award for his story on dust's impact on drought in the US West.
Coral reefs are under pressure from climate change, which may reduce their ability to protect tropical islands against wave attack and erosion. The study suggests that coasts fronted by relatively narrow reefs with steep faces and deeper reef flats will experience the highest wave runup and greatest potential for island flooding.
A new study suggests that warmer air and reduced sea ice in the Arctic may lead to lower levels of toxic methylmercury in fish and humans. The EarthQuiz challenge allows users to explore virtual field locations with interactive imagery and puzzles.
A new study suggests high solar activity in the 1950s-80s slowed down ocean circulation between the South Atlantic and North Atlantic, cooling Greenland while the rest of the Northern Hemisphere warmed. Weak solar activity could now fire up the circulation mechanism, leading to faster ice sheet melting and increased sea-level rise.
Researchers found that stratospheric intrusions bring extremely dry air from the upper atmosphere down to the surface, increasing fire danger. The intrusions were linked to a major wildfire in southern California, with ozone levels exceeding federal limits at monitoring sites.
A new study found that Beijing's physical area quadrupled between 2000 and 2009, highlighting the rapid growth of urban infrastructure. Meanwhile, earthquake experts have made progress in resolving scientific debates through collaborative research.
Hydraulic fracturing requires varying amounts of water, with average volumes ranging from 2.6 gallons to 9.7 million gallons per well. The most water-intensive watersheds coincide with major shale formations such as Eagle Ford and Haynesville-Bossier.
AGU researchers explore the impact of the Sabah earthquake on sediment production and river systems in Malaysia, while also discussing improved predictions for Arctic sea ice extent. The findings highlight the urgent need to better understand and predict these natural phenomena.
A new study finds that Alaska's glaciers are losing mass exceptionally fast due to surface melting, overshadowing iceberg calving, and making climate-related melting the primary driver of global sea level change. This will have significant implications for future sea level projections and models.
A new study finds that the lag time between rock uplift and river erosion in the Tibetan Plateau was just 2 million years or so, making them relatively synchronous events. The researchers used fission track dating to determine the timing of these events and shed light on the geological history of the region.
A new model predicts coronal mass ejections with 24-hour advance warning, while satellite altimetry helps optimize reservoir releases in real-time. This enables more efficient water management on data-limited rivers around the world.
A new study in Geophysical Research Letters warns of increased coastal erosion and flooding risks in the Gulf of Mexico due to rising waves. Meanwhile, annual floods in the Grand Canyon are rebuilding sandbars, while scientists analyze historic rainfall data from Padua, Italy, revealing long-term oscillations and extreme weather patterns.
New study reveals lag time between rock uplift and river erosion in the Tibetan Plateau was just 2 million years, making them relatively synchronous events. Scientists used fission track dating to measure temperature-sensitive events in rocks and found increased erosion rates fourfold to eightfold in the late Miocene.
A new tool uses seismic signals to estimate the energy released by military ordnance, mining events, industrial accidents, plane crashes, and terrorist attacks. The method can calculate yields for explosions hundreds or thousands of kilometers away from a seismic station.
A new study found emissions of ozone-forming compounds at an Illinois ethanol refinery are 30 times higher than government estimates. Emissions from other refineries in the US may also be underestimated, potentially making them a larger source of VOCs than currently thought.
New research matches underwater volcanic eruptions with their sound signatures to better detect seafloor emissions. Shale boom is linked to increased ozone pollution concentrations in Texas areas. Titan's atmosphere changes fluctuate according to the Sun's magnetic cycle, affecting methane levels.
Concentrations of anesthetics desflurane, isoflurane, and sevoflurane have been rising globally, making a small contribution to climate change. The gases are potent greenhouse-gas effects, with one kilogram of desflurane equivalent to 2,500 kilograms of carbon dioxide.
A new study reveals that the 2011 Japan earthquake triggered a significant release of climate-warming gases, including CFC-11 and HCFC-22, contributing to global warming. The study found that emissions increased by 21-91% over typical levels, equivalent to about 10% of Japanese vehicle emissions in 2011.
A new satellite will monitor solar storms and detect pollution from underground aquifers that seep into the ocean. The Deep Space Climate Observatory will provide critical warnings for astronauts and operators of planetary infrastructure.
New observations show that Jupiter's auroral glow sometimes flares up due to a process unrelated to the Sun. The giant planet's polar auroras are powered by a separate interaction between Jupiter and its moon Io, causing intense electric fields at Jupiter's poles.
A 67-year study reveals less summer fog in California is driven by urban growth, threatening native plants' water source during dry months. The shift could lead to warmer, drier hillsides and increased fire risk.
Researchers study ionosphere irregularities to improve GPS communications and investigate nutrient upwelling in the Salish Sea. The study reveals that estuary-enhanced upwelling in the Strait of Juan de Fuca is a critical source of nitrogen, driving enhanced upwelling and influencing marine life.
A new satellite-based study found that tropical forests lost 4 million hectares annually from 1990-2000 and 6.5 million hectares from 2000-2010, with a 62% increase in deforestation rate.
New satellite-based estimate reveals phosphorus transport from Saharan Desert to Amazon rainforest over multiple years. Researchers also investigate human and robotic missions to the Moon, potentially uncovering solar system origins.
A new study reveals that intense hurricanes, possibly more powerful than any storms in recorded history, frequently pounded the US Northeast between 250 and 1150. The findings could have implications for future hurricane intensity and frequency as ocean temperatures increase due to climate change.
Some science museums are removing their dinosaur exhibits due to conservation issues. A new database aims to improve estimates of oceanic methane and nitrous oxide emissions. Amateur radio operators' data has potential for validating space weather models and understanding ionospheric behavior.
Research finds cyclical variations in Earth's tilt and orbit coincide with 100,000-year changes in Earth's orbit and climate. Volcanic activity at mid-ocean ridges may release carbon dioxide, contributing to climatic shifts.
A new study reveals that Pacific wind patterns behind California's drought also led to a significant drop in small plant-like organisms in the northeastern Pacific Ocean, potentially affecting marine life. Meanwhile, researchers warn of worsening US air quality due to climate change, particularly ozone pollution fueled by nitrogen oxid...
Scientists have discovered distinctive sounds associated with iceberg births, which can help detect different types of glacial loss. Underground water reserves in Hawaii's high country could be a source of geothermal energy. Researchers on Mars have found 'knobby terrain' that suggests explosive past volcanic eruptions.
Researchers found that recent US mountain warming might be less than previously thought due to sensor biases. In other news, the Interior Secretary seeks common ground with Congress on climate change and scientific integrity.
A new study in Geophysical Research Letters finds that large thunderstorms can transport significant amounts of ozone from the stratosphere to the troposphere. Decades of mitigation efforts in megacities like Los Angeles demonstrate improvements in air quality, highlighting the need for continued action against urban air pollution.
A new study suggests that small volcanic eruptions could be contributing to the slowdown in global warming by ejecting more atmosphere-cooling gas into Earth's upper atmosphere. By deflecting solar radiation, these eruptions may have lowered global temperatures by 0.05 to 0.12 degrees Celsius since 2000.
A new study using satellite data estimated global ship traffic from 1992 to 2012, finding a four-fold increase over the past 20 years. Shipping traffic grew faster in the Indian Ocean, peaking at a rate of 10% per year in 2011.
Researchers examine how westerly wind pulses impact El Niño's strength, suggesting a link between these events and the phenomenon's duration. Scientists also explore drilling into small volcanoes to better understand future hazards.
New research finds that rainfall patterns, not just amount, influence landslide risk. Scientists developed a model to predict landslides based on rainfall variability. Changing winds in Antarctica are also causing coastal glaciers to melt at an accelerated rate.
A recent study has found evidence of a massive tsunami that struck the Hawaiian islands around 500 years ago, with waves reaching up to nine meters high. The discovery has prompted officials to revise their tsunami evacuation maps to account for the possibility of an extreme tsunami hitting the county.
The 1934 drought was seven times larger than comparable droughts and nearly 30% worse than the next most severe drought, affecting nearly 72% of western US. Dust storms intensified the drought and spread it throughout the region.
Scientists develop new avalanche monitoring method using infrasound detectors to detect and track deadly snow slides. A community-driven framework for climate reconstructions aims to study the past 2000 years' paleoclimate.
Researchers used fiber-optic cables to measure Antarctic ice loss in real-time, with potential implications for global sea levels. In another study, scientists explored the Indian Ocean's legacy and future research efforts. Meanwhile, Oregon landslides were found to be more susceptible to catastrophic failure during earthquakes.
Researchers suggest that plasma bubbles may have contributed to communications outages during the Battle of Takur Ghar. A new computer model predicts the impact of such bubbles on future military operations, allowing for minimization of their effects.
A new study reveals peak tornado activity in the central and southern Great Plains of the US is starting and ending earlier than it did half a century ago. The shift in tornado activity could help states in 'Tornado Alley' better prepare for these violent storms, with some states experiencing an average shift of 14 days compared to 1954.
A new study finds that India's ground-level ozone pollution damages millions of tons of major crops, including wheat and rice, each year, with losses estimated at over $1 billion. The damage is enough to feed tens of millions of people living in poverty, highlighting the need for policy changes to address ozone pollution.
Researchers used a modeling study to identify environmental conditions that trigger cholera epidemics near Lake Kivu, predicting potential warning time for health managers. By analyzing satellite data and precipitation patterns, they found the El Niño–Southern Oscillation and human mobility are key factors.
Researchers investigate supperrotation on Venus and Titan using global atmospheric simulations. They find a global instability coupling equatorial waves, which could predict superrotation occurrence. This discovery helps scientists design spacecraft and landing missions for specific targets.
A new study reveals that sea-level spikes can cause more damage to beaches than hurricanes, while a volcanic risk assessment in Saudi Arabia highlights the danger of future eruptions. Additionally, research finds that large volcanic eruptions can trigger strong droughts in eastern China, posing a threat to its food supply.