| Seattle Times: Pete McGrail knelt at the base of a towering basalt cliff, picked up a chunk of rock and tilted it to catch the sunlight. "That's what we're interested in," he said, pointing to a Swiss-cheese network of tiny holes. "That porosity." The cavities are the remnants of gas bubbles trapped in lava that flooded the Pacific Northwest millions of years before humans appeared on Earth. Now, McGrail hopes these rocks will help solve a man-made problem of global ... |
