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Why the Arctic's rivers are rusting now and where toxic orange water could spread next
Why the Arctic's rivers are rusting now and where toxic orange water could spread next Sadie Harley Scientific Editor Robert Egan Associate Editor Scientists have identified the two biggest reasons that once-pristine rivers across the Arctic are growing cloudy with toxic orange iron particles that smother insects and suffocate fish. A new study published in Communications Earth & Environment builds on earlier research documenting widespread contamination in Alaska's Brooks Range. As the...
Extreme weather is making Antarctic research harder, but new technology is providing some answers
Extreme weather is making Antarctic research harder, but new technology is providing some answers Gaby Clark Scientific Editor Robert Egan Associate Editor When you think of Antarctica, you might imagine a stark, otherworldly continent of endless, white ice, with the only sound being the wind punctuated by the crack of a glacier calving in the distance. This image may have been true more than 30 years ago, but is certainly not the case anymore. In January, I met online with colleagues who...
Ancient oceans began suffocating millions of years before Triassic mass extinction, geologists discover
Ancient oceans began suffocating millions of years before Triassic mass extinction, geologists discover Sadie Harley Scientific Editor Robert Egan Associate Editor One of the most devastating extinctions in Earth's history is best known for what didn't die—dinosaurs. But the end-Triassic extinction 201 million years ago wiped out roughly 60% of Earth's species, and scientists are still piecing together how it unfolded. New evidence from Virginia Tech geologists shows that the volcanic...
Amazon rainforest emits new stress-defense molecules during El Niño drought
Amazon rainforest emits new stress-defense molecules during El Niño drought Gaby Clark Scientific Editor Robert Egan Associate Editor The Amazon rainforest responded to the most severe drought ever recorded in the basin with an unexpected defense mechanism. Researchers at the Max Planck Institute for Chemistry in Mainz, Germany, found that during and after the intense 2023–2024 El Niño cycle, the most intense drought ever recorded in the region, vegetation significantly changed its chemical...
Climate-based tool predicts coral bleaching months in advance, offering critical lead time for reef protection
Researchers at the Woods Hole Oceanographic Institution (WHOI) have developed a new method to predict coral bleaching five to six months before it occurs, giving reef managers valuable time to protect vulnerable ecosystems. In the new study, "Climate modes can be leveraged to forecast coral bleaching months in advance," published in Communications Earth & Environment, researchers demonstrate that coral bleaching on the Caribbean island of Curaçao occurs when three major climate patterns in...
Dino-killing asteroid may have fueled underground life for 8 million years
Dino-killing asteroid may have fueled underground life for 8 million years Gaby Clark Scientific Editor Robert Egan Associate Editor The asteroid that caused the extinction of the dinosaurs also created an underground environment suited to supporting new life, and new research suggests it lasted for millions of years longer than previously suspected. The finding has surprised the international team of researchers behind it, who came to their conclusions by pairing sophisticated new analysis...
Satellite data reveal Southern Ocean vertical currents diving 3,000 feet below surface
June 9, 2026 report Satellite data reveal Southern Ocean vertical currents diving 3,000 feet below surface Paul Arnold Author Lisa Lock Scientific Editor Robert Egan Associate Editor Ocean currents are not just horizontal motions that flow from side to side. There are also vertical currents that act like deep-sea elevators, pushing heat and carbon down into the deep, while bringing up vital nutrients and dissolved gases to the surface. Our knowledge of these vertical movements has been...
Sea ice loss in the Arctic has triggered a critical tipping point that's destroying the food chain
Sea ice loss in the Arctic has triggered a critical tipping point that's destroying the food chain Researchers say the Arctic Ocean crossed a biological tipping point in 2009, when nitrate levels in the water suddenly started dropping due to a drastic reduction in sea ice extent. The Arctic Ocean has crossed a tipping point that is wreaking havoc on the region's food chain, with potentially dire consequences for commercial fishing and the ocean's capacity to soak up carbon, a new study...
Atacama Desert's extreme aridity initiated 20 million years earlier than previously thought, study finds
A collaborative study with the University of Cologne, recently published in Nature Communications, provides compelling evidence that the extreme aridity in the hyperarid core of the Atacama Desert began over 40 million years ago—significantly earlier than previously assumed. The findings require a reconsideration of how deserts form and offer a new perspective on the long-term evolution of Earth's most extreme environments. Researchers from SUERC Centre for the Isotope Sciences are...
Collaborative Navigation and Exploration with $\beta$-Sparse Gaussian Processes
arXiv:2605.26304v2 Announce Type: replace Abstract: Collaborative navigation of heterogeneous robots in unknown environments poses significant challenges due to sensing, communication, and computational limitations. In this work, a lead robot navigates toward a target while a mobile sensor robot (e.g., a drone) assists by transmitting information about its locally observed map under bandwidth constraints. We propose a framework that enables the sensor to jointly select its transmitted map...