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Police officers in Ferguson, Missouri, have begun wearing body cameras after weeks of unrest over the shooting death of an unarmed black teen by a white officer and sharply differing accounts of the incident, officials said on Sunday.

Michael Brown, 18, was shot multiple times by Ferguson Police Officer Darren Wilson on Aug. 9, sparking nearly three weeks of angry protests in the St. Louis suburb and drawing global attention to race relations in the United States.

Law enforcement and witnesses gave differing accounts of what transpired before Brown was shot, with police saying the teen had struggled with the officer. Witnesses say Brown held up his hands and was surrendering when he was shot multiple times in the head and chest.

The discrepancy has revived calls for officers across the county to be outfitted with body cameras to help capture an accurate record of police-involved incidents.



5 Greatest Discoveries in Mathematics #5

Euclid’s Elements

Written around 300BC, Euclid’s work built the foundation for modern mathematics by introducing a set of axioms and proceeding to demonstrate by mathematical rigor a collection of theorems that naturally followed.

Covering subjects ranging from algebra to plane geometry (also now known as Euclidean Geometry), Elements remained a cornerstone of mathematical teaching for over 2,000 years following its creation.

Elements influenced the thinking of great minds ranging from Dostoevsky to Einstein, and Abraham Lincoln’s inclusion of the phrase “dedicated to the proposition” in his Gettysburg address is often attributed to his readings of Euclid.



Funny story: 

Euclid’s Parallel Postulate is something that I think about a lot due to it’s apparent simplicity yet almost contradictory difficulty to prove. There was a time (about a week ago or so) where I was feeling pretty down and decided to try proving Euclid’s Parallel Postulate, fully aware I’d get no where. 

Initially I got nowhere and ended with the conclusion that  1=-1, but that didn’t stop me and 5 pages later, I got 0=3i and this was the point where I decided I’d give up on it forever.


How did the moon form? The leading theory is that the Moon resulted from a glancing collision between the young Earth and an object the size of Mars. The above image series is based on several mathematical simulations of the Moon’s origin:

The Moon’s history begins with a collision between a young Earth (larger object) and a Mars-sized planet.

10 minutes: The now-molten mantle layers (gray) of the two planets are mixing together.

1 hour: The iron cores (orange) are melding together – Most of this iron will remain with Earth.

2 hours: Parts of the mantle are spinning off into a swarm of debris.

22 hours: Pieces of debris revolve around Earth, slowly gathering together.

1 week: The growing Moon’s gravity pulls in the remaining debris.

Learn more about Moon rocks and craters.

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