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The new documentary about Russia's doomed canine cosmonaut hurts the soul—and turns the stomach.

Movies, Series & Docs

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The vastness of space is almost too mind-boggling for the human brain to comprehend. In order to accurately illustrate our place in the universe, one group of friends decided to build the first scale model of the solar system in seven miles of empty desert. Watch a beautiful representation of our universe come together in light and space in this extraordinary short film.

Science

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Science journalist Alok Jha explains why water is so incredibly strange. Prepare to have your mind blown.. Subscribe to BBC Ideas https://bbc.in/2F6ipav Anim...

Science

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While time moves forward in our universe, it may run backward in another mirror universe that was created on the “other side” of the Big Bang.

Science

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Ever since Charles Darwin published On the Origin of Species in 1859, evolution has been the grand unifying theory of biology. Yet one of our most important biological traits, consciousness, is rarely studied in the context of evolution. Theories of consciousness come from religion, from philosophy, from cognitive science, but not so much from evolutionary biology. Maybe that’s why so few theories have been able to tackle basic questions such as: What is the adaptive value of consciousness? When did it evolve and what animals have it? The Attention Schema Theory (AST), developed over the past five years, may be able to answer those questions. The theory suggests that consciousness arises as a solution to one of the most fundamental problems facing any nervous system: Too much information constantly flows in to be fully processed. The brain evolved increasingly sophisticated mechanisms for deeply processing a few select signals at the expense of others, and in the AST, consciousness is the ultimate result of that evolutionary sequence. If the theory is right—and that has yet to be determined—then consciousness evolved gradually over the past half billion years and is present in a range of vertebrate species.

Science

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Cosmic expansion stretches space itself, as if space were made of some kind of stretchy rubber material; there is no physical border, only stretching space, says astrophysicist Marcelo Gleiser.

Science

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The Fermi Paradox: There should be 100,000 intelligent alien civilizations in our galaxy — so why haven't we found any of them?

Science

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Marijuana increasingly does look to be a gateway drug -- away from alcohol consumption.

Living Well

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Meet Kate Rubins, a virus-hunter turned astronaut. When she sequenced DNA in space for the first time, she opened the door to a new era in space biology.

Science

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While some posts assert that this animation represents an action that takes place in the brain, the creator says that it — and the larger video it is part of — actually “takes the viewer through many of the inner workings of a leukocyte (or white blood cell) showing many of the cellular structures and organelles along the way.” While kinesins can and do play a role in transporting numerous important chemicals within neurons, that is not a process that would be happening in a white blood cell. Because this picture shows an artist’s visualization of a kinesin protein in a white blood cell and not a myosin protein in a neuron, and it is not an actual video but a representation, we rate the claim that this picture is a visual representation of “happiness” as false.

Science

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110 years ago Albert Einstein published a theory that revolutionized the way we think about the universe. In this video I'll show you how to prove its two po...

Cool Science

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Click to see the pic and write a comment...

Cool Science

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An HIV-positive Colombian man has died of cancer that began inside his tapeworm. His tumors were not made up of his own cells, but those of the parasitic worm that invaded his gut. This rare and unique situation is thought to be the first known to medicine whereby tumors have developed as a result of parasite-derived cancerous cells having spread and taken hold throughout a human host.

Cool Science

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The thought of being diagnosed with Parkinson’s disease strikes fear into the minds of all but the most stoic individuals; early detection is difficult, and it is currently an incurable condition. So it is quite astonishing that Joy Milne, a 65-year-old woman, has the ability to “smell” the disease in people, as reported by BBC News.

Cool Science

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To see all my Chemistry videos, check out http://socratic.org/chemistry We will learn which phase changes and exothermic, and which are endothermic. It all h...

TechWorld

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Endothermic/Exothermic are the movement of heat in the environment, very much like an ice cube melt into water, water boils into vapor and vice-versa. “Endo” means absorb and “Exo” means release (like Exit or cold hearted Ex-boyfriend/girlfriend) and the most important point to remember is the direction the heat is moving - some will associate Endothermic with cold so I will explain how a ice pack works at the end :) If you put an ice cube into a stove and light the fire up, it will melt into water and then boils into steam. The ice will be absorbing the heat from the fire to make it melt then evaporate, since the direction of the heat is going in the water this process is Endothermic. Now let’s take the opposite of the ice cube melting! Vapor condensing into water then water freezing into solid ice. Think about the direction of the heat again, for the steam to cool off, the heat needs to get out somehow. Compare to popular belief, when you put a pizza in the freezer, it doesn’t absorb the cold, it lets the heat goes out so it can freeze. Let’s summarize! Melting/boiling = heat goes in = endothermic Condensing/Freezing = heat goes out = exothermic The Ice Pack Problem An Ice Pack is an endothermic reaction however it can be confusing to why absorbing heat makes the pack cold, should be the opposite. In the pack you have water and a specific kind of salt (called Ammonium Nitrate) separated by a barrier. When you crack the ice pack, the salt and water mix together. The chemical reaction absorbs almost all the heat within the water instantly forcing it to freeze. The major difference here is that the heat doesn’t go out of the pack, it’s absorbed in the water by the chemical reaction. #StayCurious

Cool Science