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With Google+ Communities, you can talk about the stuff you're into with people who love it too. Plan events, start hangouts, and share with your communities from across the web.

But if you don't see any ninjas today, that's because they're ninjas. Or cats.

Artist and TED Fellow Aparna Rao re-imagines the familiar in surprising, often humorous ways. With her collaborator Soren Pors, Rao creates high-tech art installations -- a typewriter that sends emails, a camera that tracks you through the room only to make you invisible on screen -- that put a playful spin on ordinary objects and interactions.

Body language affects how others see us, but it may also change how we see ourselves. Social psychologist Amy Cuddy shows how "power posing" -- standing in a posture of confidence, even when we don't feel confident -- can affect testosterone and cortisol levels in the brain, and might even have an impact on our chances for success.

A few Impressive illusions that will blow your mind

Keith Barry shows us how our brains can fool our bodies -- in a trick that works via podcast too. Then he involves the audience in some jaw-dropping (and even a bit dangerous) feats of brain magic.

When this poisonous monarch comes out to hunt, the whole forest steers clear. Until a rat snake blunders into its path... and gets swallowed alive!

Tel-Aviv University demos quantum superconductors locked in a magnetic field.

Tanner Foust and Greg Tracy conquer the Hot Wheels Double Dare Loop at X Games Los Angeles.

The kakapo is a large, flightless parrot from New Zealand and one of the rarest birds of all, with only 124 individuals alive today. The main reason for its decline is predation by introduced mammals, particularly feral cats.

Australian comedy group 'Axis Of Awesome' perform a sketch from the 2009 Melbourne International Comedy Festival. Footage courtesy of Network Ten Australia.

Have you ever made a panorama? Cool! But, have you ever made a panorama consisting of 1920 photos??? No! Check out this little behind the scenes video for such a panorama in one of the most iconic places on earth - Machu Picchu in Peru. As you will see, you're not going to take this one hand-held, and there is a bit of paper work to be done you go there. Travel through the final photo here

JoJo the Indian Ringneck and Buddy the Quaker Parrot have a little thing going on

Jonny Phillips goes on the run as he tries to outwit the persistent nose of a highly trained tracker dog.

Video of a strong tornado crossing State Highway 4, just north of Langley, Kansas, southwest of Salina, Kansas on April 14, 2012. Tim Samaras is a National Geographic Explorer and severe storms researcher.

A father who lost his arm in an accident six years ago has been given a new lease of life by a hi-tech bionic hand which is so precise he can type again. Nigel Ackland, 53, has been fitted with the Terminator-like carbon fibre mechanical hand which he can control with movements in his upper arm. The new bebionic3 myoelectric hand, which is also made from aluminium and alloy knuckles, moves like a real human limb by responding to Nigel's muscle twitches. Incredibly, the robotic arm is so sensitive it means the father-of-one can touch type on a computer keyboard, peel vegetables, and even dress himself for the first time in six years.

Watch as these talented performers use electricity to entertain the crowds at Belfast Festival

Some Australian dude upgraded his Surface table (which ran a special version of Windows 7) to regular Windows 8 -- and here's what it looks like. What's the matter with you, Microsoft? Are you going to wait until Apple has a giant touch desktop on the market for four years before you try to enter the market?

The suits, numbers and colors in a deck of cards correspond to the seasons, moon cycles and calendar. Marco Tempest straps on augmented reality goggles and does a card trick like you've never seen before, weaving a lyrical tale as he deals. (This version fixes a glitch in the original performance, but is otherwise exactly as seen live by the TEDGlobal audience, including the dazzling augmented reality effects.)

Director Ang Lee (Brokeback Mountain, Crouching Tiger, Hidden Dragon) creates a groundbreaking movie event about a young man who survives a tragic disaster at sea and is hurtled into an epic journey of adventure and discovery. While marooned on a lifeboat, he forms an amazing and unexpected connection with the ship's only other survivor -- a fearsome Bengal tiger.

Music made from the streets in vancouver