Preheat oven at 450 degrees Fahrenheit (230 Celsius).
In a large bowl mix the flour, baking powder, baking soda and salt.
Add the olive oil and rub with your fingers, until the flour mixture is a bit like crumbs.
Mix the yogurt and milk in a small bowl. Add to the flour and mix slowly with a spoon until everything is incorporated. If it is too dry, add a bit of milk. The dough will be sticky and soft.
Add a bit of flour to your hands and surface and shape dough in a ball. Spread out on a surface, and fold again a couple of times. Pat out so thickness is about 1 inch, cut in 2 to 2 ½ inch (5-6 cm) circles (I used a small glass).
Place on a baking pan, one slightly touching the other (according to Alton Brown this helps them rise more).
Bake for about 15-20 minutes until golden (mine were done at 15 minutes, so start checking them a bit before).
Remove and enjoy.