Scientists shocked to discover new species of green anaconda, the world’s biggest snake

Bryan G. Fry, The University of QueenslandThe green anaconda has long been considered one of the Amazon’s most formidable and mysterious animals. Our new research upends scientific understanding of this magnificent creature, revealing it is actually two genetically different species. The surprising finding opens a new chapter in conservation of this top jungle predator. Green anacondas are the world’s heaviest snakes, and among the longest. Predominantly found in rivers and wetlands in South America, they are renowned for their lightning speed and ability to asphyxiate huge prey then swallow them whole. My colleagues and I were shocked to discover significant genetic differences between the two anaconda species. Given the reptile is such a large vertebrate, it’s remarkable this difference has slipped under the radar until now. Conservation strategies for green anacondas must now be reassessed, to help each unique species cope with threats such as climate change, habitat degradation and pollution. The findings also show the urgent need to better understand the diversity of Earth’s animal and plant species before it’s too late. An impressive apex predator Historically, four anaconda species have been recognised, including green anacondas (also known as giant anacondas). Green anacondas are true behemoths of the reptile world....
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Scientists Define a Color Never Before Seen by Human Eyes, Called 'Olo'–a Blue-Green of Intense Saturation

Photo by Hamish on UnsplashAn experiment in human photoreceptors allowed scientists to recently define a new color, imperceptible by the human eye, that lies along the blue-green spectrum but is different from the two.The team, who experimented on themselves and others, hope their findings could one day help improve tools for studying color blindness or lead to new technologies for creating colors in digital imagery.“Theoretically, novel colors are possible through bypassing the constraints set by the cone spectral sensitivities…” the authors write in their abstract. “In practice, we confirm a partial expansion of colorspace toward that theoretical ideal.”The team from University of California, Berkeley and the University of Washington used pioneering laser technology which they called “Oz” to “directly control the human eye’s photoreceptor activity via cell-by-cell light delivery.”Color is generated in our vision through the transmission of light in cells called photoreceptors. Eye tissue contain a series of cones for this task, and the cones are labeled as L, S, or M cones.In normal color vision, the authors explain, any light that stimulates an M cone cell must also stimulate its neighboring L and/or S cones because the M cone spectral response function lies between that of the L and S cones.“However, Oz stimulation can by definition...
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