SAN FRANCISCO, Nov 3: Floating robots to gather storm data, fuel cells for power outages, and tools to choose evacuation routes and help responders stay connected to the Internet are among the innovations that increasingly will help responders deal with future disasters, start-up companies say. These tools are helping track weather patterns and measure their strength, soften their impact and speed recovery. Many are already proving their worth, not just in massive storm Sandy but in other weather disasters such as Hurricane Isaac and this summer’s extreme drought in the U.S. Midwest. (agencies)