A common challenge to evolutionary theory is that while life does indeed change over time (what is known as microevolution), no one has ever seen one species evolve into another species (macroevolution).

If the tape was rewound and evolution started over from scratch, Conway Morris says, the evolutionary details would be different, but the end result would be similar: a species characterized by intelligence and complex civilization.

In a recent interview with the Sirius XM radio show Centered, Karl Giberson sat down with host Don Belanus to discuss the book The Language of Science and Faith.