“The cheapest way to warm Mars may be to use bacteria that convert nitrogen and water into ammonia or that can create methane out of water and carbon dioxide. The” — Stephen L. Petranek Copy Share Image
“Wind shapes the dunes in this crater into a V-like formation, akin to migrating birds in flight.” — Stephen L. Petranek Copy Share Image
“The cheapest way to warm Mars may be to use bacteria that convert nitrogen and water into ammonia or that can create methane out… — Stephen L. Petranek Copy Share Image
“I believe it is time to explode once and for all the theory of the solitary space rocket and its little band of bold… — Stephen L. Petranek Copy Share Image
“They must also inflate “buildings”—domed, pressurized tents made of exotic materials that will increase their living area and act as greenhouses in which to… — Stephen L. Petranek Copy Share Image
“When the first humans set foot on Mars, the moment will be more significant in terms of technology, philosophy, history, and exploration than any… — Stephen L. Petranek Copy Share Image
“Investors include former Google CEO Eric Schmidt and Google cofounder Larry Page. Planetary Resources’ lead was followed in 2013 by a firm called Deep… — Stephen L. Petranek Copy Share Image
“Even the most optimistic scenarios for reengineering the Martian atmosphere are projected to take nine hundred years. Yet within that time frame, humans are… — Stephen L. Petranek Copy Share Image
