Ancient climates . More on global warming . Melting ice in Antarctica .
Beaches erode .
Diseases arise . A foraminifera called Quinqueloculina impressa The dark brown structure is the microscopic foram's shell. Radiating from the opening are fine, hairlike reticulopodia, which the foram uses to find and capture food. A piece of drill core taken from sediment nearly 1000 meters, or about half a mile, below the ocean floor. Courtesy Ocean Drilling Program .