happy birthday
May 19, 2014
FRANCOIS DURAND/Getty Images

Today marks the 40th anniversary of the Rubik's cube, the world's best-selling toy, and Google has created an interactive, playable digital version in its honor. Here are a few things you might not know about the iconic toy.

1. The Rubik's cube was invented by a professor.
The Telegraph reports that Erno Rubik, a Hungarian professor of architecture and design, "wanted a working model to help explain three-dimensional geometry" to his students.

2. The toy was originally named the Magic Cube.
In a recent interview with The New York Times, Rubik admitted that it was strange to refer to his creation as a "Rubik's cube" and says that he calls it "my cube." Rubik introduced the toy as the Magic Cube in Hungary, named for his theory of "magic cubology," but the Ideal Toy Corp. dubbed it the Rubik's cube in 1979.

3. All possible Rubik's cube combinations can be solved in 23 moves.
Our sister site Mental Floss found that no matter how the cube starts out, its colors can be perfectly rearranged in 23 or fewer steps. If you're addicted to the toy, whether in physical form or on Google's homepage, Mental Floss has the secrets to solving any Rubik's cube in 23 moves. Meghan DeMaria

Baltimore
8:44 a.m. ET

In an interview with CBS This Morning on Tuesday, NAACP President and CEO Cornell William Brooks stressed that violence and riots won't change America's justice system.

"This is not merely one tragedy, but one in a series of tragedies, and there is much to be done that we have to pursue with vigor," Brooks said. "This problem won't be solved with Molotov cocktails. Burning businesses and homes and buildings in your own community is like putting a gun to your own head. And the fact of the matter is that rioting and looting doesn't represent flowers or a sympathy card to a grieving family. We've got to engage in constructive action."

Brooks also had the perfect answer when asked whether Baltimore's mayor should have called in the National Guard sooner. "It is a tragedy that is yet unfolding, and so second-guessing the mayor doesn't do anything to restore these buildings, or to console a grieving family, or to bring about healing to a broken and bruised community," Brooks said. Watch CBS' full interview with Brooks below. —Meghan DeMaria

explainers
8:17 a.m. ET
CC by: Jim Hood

There are an endless supply of articles about what to include in your résumé and what to leave out — in fact, there are whole books dedicated to the subject. But what about the font you use to put your professional life to paper? Bloomberg's Natalie Kitroeff spoke with "three typography wonks" to get their opinion, and they had a consensus choice: Helvetica (the font so classy it has an entire documentary dedicated to its san-serif glory).

Helvetica is safe, and it "feels professional, lighthearted, honest," designer Brian Hoff tells Bloomberg. If you want to stand out a bit, you can drop $30 (up to $734) to buy the font Proxima Nova, and if you insist on using serifs (the feet that adorn letters), go with Garamond or maybe Didot, the typography geeks suggest. Do not use Times New Roman.

"It's telegraphing that you didn't put any thought into the typeface that you selected," Hoff says. "It's like putting on sweatpants." For other suggestions and the font cognoscenti view on emojis (maybe!), read Kitroeff's dispatch at Bloomberg. Peter Weber

Baltimore
8:01 a.m. ET

Riots over the death of Freddie Gray, who died after suffering from injuries he received while in police custody, continued in Baltimore on Monday night. Maryland Gov. Larry Hogan (R) declared a state of emergency, and Baltimore Mayor Stephanie Rawlings-Blake (D) imposed a mandatory curfew, starting Tuesday, from 10 p.m. to 5 a.m. At least 15 police officers were injured in clashes on Monday. Below are a few scenes from the riots and their aftermath. —Meghan DeMaria

nepal earthquake
7:21 a.m. ET
Omar Havana/Getty Images

On Tuesday, foreign aid started arriving in Nepal's capital, Kathmandu, following Saturday's devastating 7.8 magnitude earthquake, and mountaineers said that all stranded climbers high up on Mt. Everest had been rescued by helicopter. But the official death toll from the temblor reached 4,349, with more than 7,000 known injured, and as bad as things are in the capital, they're undoubtedly worse in the villages cut off from aid.

"The government is doing all it can for rescue and relief on a war footing," Prime Minister Sushil Koirala told Reuters. "It is a challenge and a very difficult hour for Nepal." At least 8 million people were affected by the quake, and 1.4 million need food, the United Nations estimated, and the number of confirmed deaths will almost certainly go up, Koirala said. "The death toll could go up to 10,000 because information from remote villages hit by the earthquake is yet to come in."

Nepal's citizens are getting impatient as the government tries to get a grasp on the devastation and reach those remote villages. When it comes to the number of dead and injured and where they are, "right now, what we're hearing from everybody, including our own staff, is that we don't know," Mercy Corps' Jeffrey Shannon tells The New York Times. "As people start to travel these roads, to reach these communities, you run into landslides. They're simply inaccessible, the ones that need the most help. Peter Weber

Quotables
6:24 a.m. ET

The family of 25-year-old Freddie Gray held a press conference late Monday, after Gray's funeral, urging the people in Baltimore protesting the unexplained death of the young black man in police custody to stand down. "I want y'all to get justice for my son, but don't do it like this here," said Gray's mother, Gloria Darden. "Don't tear up the whole city just for him. It's wrong."

Gray's twin sister, Fredericka Gray, also said "the violence is wrong," adding that her brother wasn't violent or the type of person who breaks into stores. "I don't think that's for Freddie," she said. "I don't like it at all."

National Guard troops started taking positions on the streets of Baltimore late Monday, as rioting and looting spread from the west side of the city to the east and closer to downtown. By Tuesday morning, fires were still smoldering from the handful of buildings and cars set ablaze. Watch Gray's family call for peace, and city officials talk law and order in the Associated Press video montage below. —Peter Weber

Good Dog
5:23 a.m. ET

Florida's avocado industry is in grave danger from laurel wilt, a fungus spread by the ambrosia beetle, believed to have been imported from Asia. "This is probably the biggest threat to the Florida avocado that's ever been seen," University of Florida tropical fruit specialist Jonathan H. Crane tells The Associated Press. Florida's avocado advocates have a simple message for America: #SavetheGuac.

That may sound like hyperbole, but if the ambrosia beetle spreads to Texas and California — California produces 90 percent of U.S. avocados — America really might have to import all its guacamole. Mexico would be at risk, too. So Florida is trying to detect the fungus in the early stages, when trees can still be saved, and to do that, they are employing drones to find diseased areas and dogs to sniff out infected trees. The AP video below has more details, plus footage of one of the four dogs that may save your guacamole. —Peter Weber

Crime and punishment
4:59 a.m. ET
Ahn Young-Joon—Pool/Getty Images

On Tuesday, an appellate court in Gwangju, South Korea, convicted the captain of a ferry that sank a year ago, killing 300 students and other passengers, of "murder through willful negligence," and sentenced him to life in prison. Last year, a lower court had acquitted the captain, Lee Joon-seok, of homicide but sentenced him to 36 years in jail for lesser charges.

Fourteen other crew members of the Sewol were given sentences of between 1.5 and 12 years; the chief engineer actually received a reduced sentence, from 30 years to 10 years.

"Because of Capt. Lee's irresponsible behavior, many young students died without their lives blossoming," said the presiding judge, Seo Kyong-hwan. "His conduct, which helped send the country's national prestige crashing down, can never be forgiven." Lee, 70, and his co-defendants can appeal the verdicts to South Korea's Supreme Court. Peter Weber

See More Speed Reads