Awww, guys, don't fight.

Jörg Sprave of The Slingshot Channel is back with another slingshot, a pump action crossbow.

Father of two and unemployed ex-military guard Ken Andre of Yeovil, Somerset, England, prowls the streets up to four nights a week in his Japanese Ninjutsu robe as a self-styled superhero named Shadow.

Take that, stupid trees, with your production of oxygen and providing of shade.

Jörg Sprave of The Slingshot Channel has built another awesome weapon to add to his collection next to the machete slingshot, the Gatling gun slingshot, the 6-shot slingshot, the slingshot that launches circular saw blades, and the musket ball crossbow.

We've been following Jörg Sprave of The Slingshot Channel's work for quite some time.

We've already covered Jörg Sprave's other awesomely-safe slingshots, including his machete slingshot, his Gatling gun slingshot, and his 6-shot slingshot.

Ruth Schulz and her colleagues in Queensland, Australia, are teaching a set of robots to create their own language to communicate directions to each other.

Researchers at UPenn's GRASP Lab taught quadrotor helicopters "precise aggressive maneuvers" then gave them claws and programmed them to lift objects in unison and recover from violent throws.