[s0e13] Planet Of The Dead -

The bus hit the rift like a diver hitting water. There was a moment of blinding white light, a jolt that threw everyone to the floor, and then—the smell of rain and diesel.

"A trillion people lived here a year ago," the Doctor said softly. "Then something came. Something that eats everything. Not just the people, but the air, the water, the very molecules of the world." [S0E13] Planet of the Dead

(or sci-fi logic) behind the "Stingray" creatures. The bus hit the rift like a diver hitting water

"They tear a hole in space, eat the world until it's a desert, and then move to the next one," the Doctor explained, his eyes widening. "And that hole leads straight back to London." but the air