Why Does Gravity Travel at the Speed of Light?

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Two neutron stars collide; the resulting gravitational wave spread at the speed of light. (Credit: National Science Foundation/LIGO/Sonoma State University/A. Simonne) The dead cores of two stars collided 130 million years ago in a galaxy somewhat far away. The collision was so extreme that it caused a wrinkle in space-time — a gravitational wave. That gravitational wave and the light from the stellar explosion traveled together across the cosmos. They arrived at Earth simultaneously at ...read more

Let's Talk About the Jurassic Park: Fallen Kingdom Trailer

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Sure, this is supposed to be Isla Nublar, but I’m pretty sure this is a valley on the big island of Hawaii. A shot from the Jurassic World: Fallen Kingdom trailer. First off, don’t get me wrong, I love crazy geo-related films. I’m not going to pull a Neil DeGrasse Tyson here and take all the fun out of a movie because it is horribly, fantastically wrong when it comes to the science … but maybe we need to have a few words about Jurassic World: Fallen Kingdom. The first t ...read more

For Homo Sapiens, This Is as Good as It Gets

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(Credit: Shutterstock) Well, that’s it. Pack it in, boys. Show’s over for us as a species: We’ve peaked. At least, we might have, according to a paper in Frontiers in Physiology. If anything, it looks like we might be going downhill, with climate change and other environmental effects taking our bodies away from their current idealized forms. Fastest, Highest, Strongest First, the findings themselves. In the paper, “Are We Reaching the Limits of Homo Sapiens?”, th ...read more

An animation of nighttime satellite images shows the start and breathtakingly rapid spread of the first SoCal wildfires

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A second animation shows the giant smoke plume from the Thomas Fire illuminated by this week’s supermoon as it streams over the Pacific This animation of infrared images shows the rapid development of SoCal wildfires driven by strong Santa Ana winds starting on the evening of Dec. 4th, continuing overnight and into the next day. Heat from the fires is highlighted with black, yellow and red pixels. Please click on the image to watch the animation. (Source: Cooperative Institute f ...read more

Flashback Friday: The scientifically-proven method for getting your bartender’s attention.

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Photo:flickr/Petras Gagilas We’ve all been there: waiting at the bar, dying for a drink, but unable to catch the bartender’s attention. It’s easy to assume that we are being served (or rather, ignored) by a crappy bartender. But maybe it’s us. Maybe we’re the ones not giving the right signals that say “Beer me! Now!”. This is actually the best-case scenario, because it’s fixable, and these German scientists are here to help (and, eventually, ...read more

The Remarkable “Curvature Blindness” Illusion

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A new optical illusion has been discovered, and it’s really quite striking. The strange effect is called the ‘curvature blindness’ illusion, and it’s described in a new paper from psychologist Kohske Takahashi of Chukyo University, Japan. Here’s an example of the illusion: A series of wavy horizontal lines are shown. All of the lines have exactly the same shape – a sine curve. However, half of the lines appear to have a much more triangular, “zig-z ...read more

We're Throwing Away Too Many Viable Kidneys, Study Suggests

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(Credit: Shutterstock) Researchers found that thousands of potentially usable kidneys have gone to waste across the United States in recent years, leaving many patients waiting unnecessarily for transplants. The study, published Thursday in the Clinical Journal of the American Society of Nephrology, highlights inefficiencies in the transplant system. According to data collected over the past 15 years, in roughly 7,600 unilateral kidney transplants—those in which one kidney was used and on ...read more

Aliens in the Mist

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A meeting of minds between Dian Fossey and one of the mountain gorillas she was studying (or the other way around?). Credit: ROBERT I.M. CAMPBELL What would happen if we found an intelligent alien civilization that was less advanced than our own? I posed this as a hypothetical question in a recent blog post. But really, it doesn’t need to be posed as a hypothetical. The answer is playing out right now in the forests of Africa, and it doesn’t reflect very well on us. The gorillas of ...read more

Why Does Coffee Make You Poop?

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There are a few different reasons why coffee makes people feel the urge to poop. (Credit: Shutterstock) You may consume coffee to get your day started, as a pick-me-up, or to get you through a lengthy meeting. You may also drink it to, perhaps, get things moving along on schedule. About 29 percent of people claim they felt the urge to poop after drinking coffee, according to a commonly cited study from 1990. But why? Discover reached out to a gastroenterology expert to see if we could get ...read more

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