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Insights from a synthetic fish built from plastic and gelatine and powered by human cardiac cells might one day be useful for treating heart disease Technology 10 February 2022 By Alex Wilkins An artificial fish built from human heart cells could teach us how the organ functions. The human heart can pump without signals from … Read more
With its tail flipping rhythmically from side to side, this strange synthetic fish scoots around in its salt and glucose solution, using the same power as our beating hearts. This nifty miniaturized circulatory system, developed by scientists at Harvard and Emory universities, can keep swimming to the beat for more than 100 days. The … Read more
Cow’s milk is an excellent source of calcium which, along with vitamin D, is needed to build strong, dense bones. Milk also contains protein, the minerals phosphorus, potassium, zinc, and iodine, and vitamins A, B2 (riboflavin), and B12 (cobalamin). As a child I drank a lot of milk. It was delivered in pint bottles … Read more
All manner of croaks, chirps, and deep trombone moans permeate Earth’s waters, just like the cacophony of sounds that fill its forest air. For example, reefs are surprisingly noisy places, and many of the noisemakers are fish. “We’ve known for a long time that some fish make sounds, but fish sounds were always perceived as … Read more
In a first for paleontology, scientists have found hundreds of tiny, fossilized fecal pellets crammed inside a fish braincase dating to about 9 million years ago. The wee fossil poops, also known as coprolites, were deposited by scavengers – probably worms – that devoured the fish’s decaying head, including its brain. As they munched the flesh … Read more
Sardines scatter wildly as a smooth penguin head zooms through their tight swirling mass within blue-green waters of the Wildlife Conservation Society’s footage. One of those silver sardines becomes the penguin’s dinner on the second swoop through. Taken in the Beagle Channel off Isla Martillo, Argentina, the penguin bodycam footage helped clarify the bird’s … Read more
Scientists onboard an icebreaker in Antarctica were blown away when they spied a trove of 60 million icefish nests dotting the floor of the Weddell Sea. The bonanza of nurseries – each guarded by a ghostly looking parent – represents the largest known breeding colony of fish. Autun Purser of the Alfred Wegener Institute was on the … Read more
ECOLOGY Huge icefish colony found Scientists aboard an Antarctic research cruise have discovered the most extensive breeding colony of fish anywhere. In February 2021, while towing video cameras and other instruments close to the sea floor in the Weddell Sea, the RV Polarstern came upon thousands of 75-centimeter-wide nests, each occupied by a single adult … Read more
The most extensive and densely populated breeding colony of fish anywhere lurks deep underneath the ice of the Weddell Sea, scientists aboard an Antarctic research cruise have discovered. The 240 square kilometers of regularly spaced icefish nests, east of the Antarctic Peninsula, has astonished marine ecologists. “We had no idea that it would be just … Read more
Goldfish may have short memories but, according to an Israeli university study, they might be able to drive. Researchers at Ben-Gurion University of the Negev found that a goldfish’s innate navigational abilities allowed it to steer a robotic vehicle towards a terrestrial target if given a food reward. To conduct their unusual experiment, the … Read more