Rescuers are scouring Japan's island of Hokkaido for survivors after Thursday's six-point-seven magnitude earthquake.<br />Twenty people have been confirmed dead.<br />Nineteen are still reported as missing as the quake triggered landslides that buried homes and buildings.<br />The search is becoming more desperate as the 72-hour "golden window" for finding survivors will pass before dawn on Sunday.<br />Over one-and-a-half million people across Hokkaido remain without power. <br />
