Desperate Venezuelans and rescue teams raced to find survivors on Friday as the death toll from twin earthquakes rose above 900 with foreign crews and aid only beginning to reach devastated areas nearly two days after the quakes. The government said 172 people remained trapped, 920 were dead and 3,360 injured after the quakes devastated parts of Caracas and surrounding areas on Wednesday evening. More than 50,000 people were reported missing. The ground shook once again Friday afternoon, a