Interferometric Synthetic Aperture Radar (IFSAR or InSAR) is a remote sensing method that exploits phase differences between two or more coherently acquired SAR images to derive precise topographic and surface deformation information. Using either single-pass (across-track baseline) or repeat-pass geometries, IFSAR forms an interferogram from complex SAR data, from which relative phase is unwrapped and converted to line-of-sight height or displacement through known radar geometry and baseline vectors. The method requires accurate calibration, coregistration, and error mitigation (e.g., atmospheric phase delay, decorrelation), and is widely employed for digital elevation model generation and geodetic-scale deformation monitoring.
Green alleys—residential laneways redesigned to enhance residents' quality of life, boost social cohesion and improve biodiversity—are gaining traction in cities across North America. But as the concept spreads, it remains ...
Environment
May 2, 2026
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The rising popularity of urban beekeeping has raised concerns about honeybee well-being and the impact they might have on wild bee populations in cities. A collaborative study by beekeepers, political stakeholders and research ...
Ecology
Apr 29, 2026
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206
Humans are not the only species negatively affected by increasingly hot and humid conditions. Intense heat waves sometimes kill large numbers of wild animals. Eastern Australia's giant fruit bats, known as flying-foxes, provide ...
Plants & Animals
Apr 28, 2026
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A new paper published in Frontiers in Marine Science presents lessons learned from and practical strategies for how small coastal communities can respond to increasing risks from sea-level rise and coastal flooding through ...
Ecology
Apr 23, 2026
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Adelaide University researchers have demonstrated that a naturally derived seaweed compound can dramatically reduce methane emissions from beef cattle raised in extensive grazing systems, without harming calves. The study, ...
Veterinary medicine
Apr 20, 2026
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Billed as the first comprehensive report on the state of U.S. lands, water, and wildlife, the Nature Record National Assessment includes the decline of butterfly populations and other species to the remarkable comeback of ...
Environment
Mar 28, 2026
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Cornell scientists have engineered E. coli to act as a sensitive biosensor for monitoring environmental arsenic, a toxic pollutant most notably found in rice paddies in Southeast Asia. Their new study provides a proof of ...
Cell & Microbiology
Mar 23, 2026
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9
Sharks are often viewed as solitary, but a new study—carried out on the Shark Reef Marine Reserve in Fiji—has found that rather than mixing at random, bull sharks have "active social preferences" and choose their social partners. ...
Plants & Animals
Mar 16, 2026
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51
Climate change has caused some tropical plants to flower earlier or later than they used to; in some cases by a matter of weeks or even months, according to a study of 8,000 flowers across more than two centuries, published ...
Plants & Animals
Feb 25, 2026
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20
Across large parts of northern Tanzania, gully erosion—soil erosion caused by flowing water—is cutting deep scars through fertile farmland, grazing areas, roads and even villages. These gullies grow faster every year and ...
Ecology
Jan 31, 2026
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