They move slowly and fall down a lot but believe it or not, these are some of the most advanced robots in the world.

A two day robotics challenge in Miami Florida pitted the worlds best robots against each other - competing in tasks designed to help humans in natural or man-made disasters.

Tasks like opening doors... or climbing up stairs. Things that may seem simple, but that for a two-legged robot using sensors and cameras to negotiate its environment, are extremely difficult.

Eight teams were chosen to move on to next year's finals.

Until then, teams will tinker and tweak their robots to prepare for the final round where the winning team will be awarded $2million dollars.

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