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Tracking pollen with quantum dots

This bee was caught after it visited a flower of which the pollen grains were labelled with quantum dots. Under the microscope one can see where the pollen was placed, and actually determine which insects carry the most pollen from which flower. Credit: Corneile Minnaar A pollination biologist from Stellenbosch University in South Africa is…

Engineered miniature kidneys come of age

Culturing kidney organoids under fluid flow causes endogenous endothelial progenitors to create more mature vascular networks which pervade the whole organoid and interact with epithelial compartments. Credit: Wyss Institute at Harvard University In recent years, researchers have created mini-organs known as organoids in the culture dish that contain many of the cell types and complex…

The physical forces of cells in action

Molecular structure of the chemical tool (on the left), blue: electron-poor, red: electron-rich, that changes color like shrimps during cooking (middle, inspiration from the fishmarket in Barcelona) to reveal physical forces inside of living cells (on the right, here endoplasmic reticulum and nuclear envelope). Credit: © UNIGE The detection of physical forces is one of…

Natural selection and spatial memory link shown in mountain chickadee research

University of Nevada, Reno research results provide the first direct evidence for natural selection on spatial cognition in wild food-caching mountain chickadees in one-of-a-kind in the world high-altitude field lab. Credit: Vladimir Pravosudov, University of Nevada, Reno Chickadees with better learning and memory skills, needed to find numerous food caches, are more likely to survive…

New molecular blueprint advances our understanding of photosynthesis

The cryo-EM structure of the NAD(P)H dehydrogenase-like complex (NDH). The atomic coordinate model shown as spheres, colored according to the different subunits, in front of an electron micrograph of frozen NDH particles in the background. Credit: Thomas Laughlin/UC Berkeley and Berkeley Lab Researchers at the Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) have…

New frog species found on remote Ethiopian mountain

A new species of puddle frog (female Phrynobatrachus bibita sp. nov.) from an unexplored mountain in southwestern Ethiopia. Credit: Courtesy NYU Abu Dhabi researchers S. Goutte and J. Reyes-Velasco. In summer 2018, NYU Abu Dhabi Postdoctoral Associates Sandra Goutte and Jacobo Reyes-Velasco explored an isolated mountain in southwestern Ethiopia where some of the last primary…

Uncovering the evolution of the brain

A stylized microscopy image of forebrain neural progenitor cells from chimpanzees described in the publication. The image represents the work’s potential for offering insights into the evolution of the primate tree of life. Credit: Salk Institute/Carol Marchetto/Ana P.D. Mendes What makes us human, and where does this mysterious property of "humanness" come from? Humans are…

In the squirrel world, prime real estate is determined by previous...

This is a Red Squirrel's midden with news cones. Credit: Kluane Red Squirrel Project A young squirrel lucky enough to take over territory from an adult male squirrel is like a teenager falling into a big inheritance, according to a new University of Guelph study. Researchers found male squirrels store more food than females, and…

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