And this final note which may rekindle your interest in bitcoin.
From the Wall Street Journal: money is even dirtier than your mother told you it was. The Dirty Money Project at NYU conducted what's called the first comprehensive study of DNA found on dollar bills.
And found the bacteria that causes acne, other bacteria linked to gastric ulcers, pneumonia, food poisoning and staph infections. They also discovered extremely minute traces of anthrax and diphtheria, and DNA from horses, dogs, and white rhinos.
Steven Elliott, one of the Rangers who mistakenly fired on Tillman's position, says he believed there were no "friendlies" in the area when he pulled the trigger.
The faster people get treatment after suffering a stroke, the less likely they are to be permanently disabled or die. Speeding up hospital procedures helps, studies find. But cost is an issue, too.
Some states have enacted so-called Amazon taxes, forcing the giant online retailer to collect sales taxes the same way traditional stores do. In those states, Amazon's sales fell about 10 percent.
A national debate over universal preschool has raised an important question: What does high-quality pre-K look like? Researchers say the preschool program in Tulsa, Okla., is among the nation's best.
A new report finds that the average compensation of fast-food CEOs has quadrupled since 2000. By comparison, worker wages have increased less than 1 percent.
Russian President Vladimir Putin is using a recent surge in popularity to crack down on opposition. Several proposed laws would strengthen penalties against protestors, and officials and local media alike are denouncing criticism of Putin as "unpatriotic."
During a visit to Kiev, Vice President Joe Biden warned Russia that it must help to reduce tensions in Ukraine. A recent international agreement intended to disarm militant groups seems to be failing.
As the search continues for the abducted Nigerian schoolgirls, the exact number of those still missing is in dispute. Michelle Faul, Nigeria bureau chief for the Associated Press, explains more.
By a 6-2 vote, the Supreme Court upheld a voter-approved measure in Michigan that banned the use of race or gender in deciding admissions to the state's public universities.
The White House named Neil Eggleston its new top lawyer. He'll have to muster his legal and political skills to deal with a divided Congress and multiple investigations of the Obama's administration.