Nothing captures the vastness of the Earth like attempting to wrap your arms around a giant sequoia tree, with a trunk as wide as a building. California's Sequoia National Park, established 26 years before the National Park Service began in 1916, is lined with these vertical behemoths, which can soak up more than 2,000 to 3,000 litres of water daily while growing skyward and outward as they have for thousands of years.