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Video Shows the Effects of Sugar on the Brain [video]

Video Shows the Effects of Sugar on the Brain [video]

We eat sugar, we crave sugar. In this video Dr. Nicole Avena explains why we do enjoy sugar.

When you eat something loaded with sugar, your taste buds, your gut and your brain all take notice. This activation of your reward system is not unlike how bodies process addictive substances such as alcohol or nicotine — an overload of sugar spikes dopamine levels and leaves you craving more. Nicole Avena explains why sweets and treats should be enjoyed in moderation.

Full video on Ted-Ed

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The Solar System is Flat. This Video Explains Why

The Solar System is Flat. This Video Explains Why

We know the solar system is flat, so are several objects in the universe like galaxies, and, as the video points out, Saturn’s rings. So why in the world did our solar system turn out to be flat, with all the three dimensional space available? The video explains it well. This also reminds us of this other video we saw some time ago. It explains similar ideas well enough, although for a two dimensional medium with focus on gravity.

An Excellent Visualization of Gravity

An Excellent Visualization of Gravity

We know gravity, but visualizing it on the fabric of space-time can be a bit daunting. This excellent video shows a simple way to visualize gravity, and on its way plays along with some pretty interesting facts and trivia. It is about 10 minutes long, but it is 10 minutes well spent.

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