When viewing biological samples with a microscope, the light beam is disturbed if the lens of the objective is in a different medium than the sample. For example, when looking at a watery sample with a lens surrounded by ...
Optics & Photonics
Apr 18, 2024
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127
Joaquim Goes, an ocean biochemist at Columbia Climate School's Lamont-Doherty Earth Observatory, had to look twice when he first saw the tiny strands of fiber floating in a water sample from the Hudson River. An expert in ...
Environment
Apr 17, 2024
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2
Lost your keys? Can't remember where you parked the car? If only you had the memory of a mountain chickadee.
Plants & Animals
Apr 17, 2024
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83
When you see an advertisement for a detergent promising to brighten your clothes, something called a fluorescent whitening compound, or optical brightener, is probably involved. Such material absorbs UV light and emits visible ...
Earth Sciences
Apr 17, 2024
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5
The loss of biodiversity poses a challenge for nature and humans alike. A study led by Ulm University shows that a decline in biodiversity promotes the spread of potentially zoonotic pathogens.
Ecology
Apr 17, 2024
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1
The Atlantic surf clam, an economically valuable species that is the main ingredient in clam chowder and fried clam strips, has returned to Virginia waters in a big way, reversing a die-off that started more than two decades ...
Plants & Animals
Apr 16, 2024
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348
A component of the human intestinal flora that has been little studied to date is the focus of a new study from Germany. Plasmids are small extrachromosomal genetic elements that frequently occur in bacterial cells and can ...
Cell & Microbiology
Apr 16, 2024
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104
NASA's plan to bring samples from Mars back to Earth is on hold until there's a faster, cheaper way, space agency officials said Monday.
Space Exploration
Apr 16, 2024
1
111
A team of researchers with varied backgrounds and affiliated with multiple organizations (including the Blackfoot Confederacy) in the U.S. and Canada has conducted a genetic study focused on tracing the lineage of North America's ...
Dangerous concentrations of long-lingering "forever chemicals" have been found in surface and groundwater worldwide, according to a study released Tuesday that showed Australia, the United States and Europe as hotspots.
Environment
Apr 13, 2024
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