Whitebark Pine (Pinus albicaulis) grows in subalpine areas of mountains in the Western US. Typically the highest elevation pine in many parts of its range, it has been decimated by White Pine Blister Rust, a fungal disease, and by the Mountain Pine Beetle. Thanks to a warmer climate at higher elevations, in the last decade the beetle in particular has had a large impact.

The elusive Snow Leopard (Panthera uncia) lives at an altitude of between 9,000 and 15,000 feet in Asia's rocky mountain ranges. Due to their secretive behavior exact numbers are uknown, but it is estimated that between 3,500 and 7,000 live in the wild. There are about 650 in captivity, with this one photographed in the Santa Barbara Zoo.

Spanning a deep, powerful tidal vent, the Golden Gate Bridge was completed in 1937, costing $35 million. With a span of 4,200 feet (1.2 km), it is 211 meters above the water. While approximately 100,000 vehicles cross the bridge every day, and thousands of tons of shipping pass beneath, nearly a quarter of the entire bay's water will flow beneath it in each daily tidal cycle. This tidal flow is forms an integral element in the bay's ecology.