The World Trade Center observation deck opens this weekend. See NYC’s history on the ride to the top

More video on the web …

• This “Single Ladies” / “DuckTales” mashup is scarily spot-on
• White hair in the White House? Hillary makes a crack about her age
• Australian TV host interrupts tortoise mating session…and male chases him away!
• Massive floods are turning Houston’s streets into rivers
• Wow. Much safety: New Delta preflight video features 22 Internet memes
• NBA player’s press conference is interrupted by his daughter
• Learn more about the iconic ad that closed out “Mad Men” (Spoilers!)
• Watch Norm MacDonald tear up as he pays tribute to David Letterman
• LA at dusk: A skateboarder makes his way through the City of Angels
• Cute, or creepy? NATO foreign ministers sing “We Are The World” together
• Watch Canadian soccer reporter confront sexist taunts on the air
• The Muppets are back on TV! Watch the first trailer for the new episodes this fall
• 1 weekend, 3 buzzer-beaters: Watch highlights from Derrick Rose, Paul Pierce, and LeBron
• Cameron wins a second term: Watch British PM’s victory speech
• 25 subway riders every New Yorker will recognize…and hate
• Awwwww: First gay couple is caught on Dodger Stadium’s Kiss Cam
• ¡Feliz Cinco de Mayo! Celebren la Batalla de Puebla con estos datos divertidos
• Yes, London still has a Town Crier—watch him announce the birth of Princess Charlotte
• Baltimore state’s attorney announces she’s charging six cops in death of Freddie Gray
• Announcer calls Orioles game in an empty stadium, makes golf joke
• “I don’t want him to be another Freddie Gray”: Viral Baltimore mom Toya Graham speaks out
• Americans gather outside the Supreme Court for gay-marriage oral arguments
• Obama gets an “anger translator” at the White House Correspondents Dinner
• 100 years later, thousands in LA take to the streets to remember the Armenian genocide
• “It can’t be edited out”: Obama calls out climate-change deniers in the Everglades
• For Earth Day, watch a clever tribute to the endangered animals of the world
• Japan’s newest high-speed train sets a world record
• Celebrate Marathon Monday with a timelapse of the Boston Marathon route
• Omg omg new Star Wars trailer omg
• Senate hearing interrupted by a senator’s “Frozen” ringtone
• Confetti bomb! ECB chair Mario Draghi attacked by protestor at press conference
• Marco Rubio is the next to jump into the 2016 presidential race
• It’s official: Hillary is in. Watch her launch video
• Rand Paul abruptly leaves Guardian interview after sparring with reporter
• Conservative activist Dinesh D’Souza makes a “Life After Conviction” video
• Obama takes on “less-than-loving Christians,” and the crowd eats it up
• Duke wins! Watch the highlights of this year’s March Madness, set to the cheesiest song ever
• Obama calms kids during Easter bee attack
• Massachusetts town names are wicked hahd to pronounce