Paleoclimatology is the study of ancient climates, including the causes and effects of climate change over geological time scales.

Sedimentary rocks contain clues about ancient climates, such as the types of plants and animals that lived in the area and the temperature and precipitation levels.

Ocean currents are not a type of proxy data used to reconstruct ancient climates. Fossil pollen, tree rings, and ice cores are all examples of proxy data that can be used to infer past climate conditions.

An ice age is a period of unusually cold climate, characterized by the growth of glaciers and ice sheets.

The Pleistocene is the name of the most recent ice age, which began about 2.6 million years ago and ended about 11,700 years ago.

An interglacial period is a period of unusually warm climate, occurring between ice ages.

The Holocene is the name of the current interglacial period, which began about 11,700 years ago.

Changes in the Earth's orbit around the Sun, known as Milankovitch cycles, are the primary cause of ice ages.

Global warming is the term for the gradual increase in global temperatures that has been occurring since the late 19th century.

Human activities, particularly the burning of fossil fuels, are the primary cause of global warming.

The potential consequences of global warming include rising sea levels, more frequent and severe heat waves, increased flooding and droughts, and other disruptions to ecosystems and human societies.

Paleoclimatology is the study of past climate change, using evidence from geological, biological, and chemical records.

Climatology is the study of present climate, including its patterns, causes, and effects.

Climatology is the study of future climate, including its potential changes and impacts.

Meteorology is the study of the Earth's atmosphere, including its composition, structure, and dynamics.