Science Visualized
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AnimalsNarwhal has the strangest tooth in the sea
Sometimes called the unicorn of the sea, the male narwhal’s tusk is actually a tooth. Narwhals detect changes in water salinity using only these tusks, a new study finds.
By Susan Milius -
AstronomyDistant swirling galaxy dwarfed by violent star killer
In a mosaic of images from a telescope in Chile, dark dust lanes and twisting tails betray a history of galactic collisions.
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EarthSeismic signals chronicle deadly landslide
Washington state’s deadly Oso landslide was recorded in seismic waves.
By Erin Wayman -
EarthEvolution of river systems
A river’s erosion downward and across a landscape is based on a variety of factors, including terrain steepness and the arrangement of tributaries.