Michael O'Hearn

Sea monsters vs. dragons

2012

Zombies vs. mummies

2012

Vampires vs. werewolves

2012

This or that history debate

2013

Henry Ford and the Model T

2006

Ghosts vs. witches

2012

Awesome space robots

2013

Triceratops vs. Stegosaurus

2012

Jake Burton Carpenter and the Snowboard

2007

Tyrannosaurus rex vs. Velociraptor

2011

Spinosaurus vs. Giganotosaurus

2011

Mato the Bear and Devil's Tower

2021

How Spirit Dog made the Milky Way

2021

el Dorado Map

2015

Allosaurus vs. Brachiosaurus

2011

This or That?

2012

Robots

2013

Monster Wars

2011