The Last Station Standing
"Without power to circulate the air, the CO2 will settle in the lower part of the cabin. We have maybe two hours before we start losing consciousness."
Mina was huddled in the corner, her eyes fixed on the small, reinforced Viewport (the thick, multi-layered glass window designed to withstand deep-sea pressure). She wasn't looking at the others. She was tilting her head, as if listening to a song no one else could hear.
"Do you hear that?" Mina whispered.
"Hear what?" Elara asked, moving toward her.
"It’s not a sound," Mina said, her voice trance-like. "It’s a pulse. A heartbeat. The Isotope... it’s singing to them."