Cambridge, Massachusetts - Got rope? Then try this experiment: Cross both ends, left over right, then bring the left end under and out, as if tying a pair of shoelaces. If you repeat this sequence, you get what’s called a “granny” knot. If, instead, you cross both ends again, this time right over left, you’ve created a sturdier “reef” knot.

San Juan, Puerto Rico - Thirty-one individuals were arrested Thursday for conspiring to commit mail fraud, theft of government money and property and aggravated identity theft. The arrests took place following a joint probe by U.S. Immigration and Customs Enforcement's (ICE) Homeland Security Investigations (HSI), FBI and the U.S. Department of Education’s Office of the Inspector General dubbed Bad Grades.

Washington, DC - Police across the nation are being targeted at random.  They are being shot at and, so far this year, more than two dozen cops have been murdered.  Meanwhile, anonymous phone calls have been logged by 911 exchanges in at least two cities, with threats like this one: "we are about to start striking fear shooting down all cops that we see by themselves."

Imperial, California - The back-to-school shopping season is experiencing a shift, as consumers are spending less on traditional supplies in July and more in August, according to global information company The NPD Group. July experienced the weakest retail sales in three years, but sales began to pick up during the first week of August.

Huntsville, Alabama - NASA is partnering with Harmonic, a worldwide leader in video delivery infrastructure, to launch NASA TV UHD, the first ever non-commercial consumer ultra-high definition (UHD) channel in North America. The partnership is the result of a Space Act Agreement between Harmonic and the agency’s Marshall Space Flight Center in Huntsville, Alabama.

Washington, DC - President Barack Obama: :Today, the Senate took an historic step forward and voted to enable the United States to work with our international partners to enable the implementation of the comprehensive, long-term deal that will prevent Iran from obtaining a nuclear weapon.