Subject(s): Climatic changes. -- Global warming. -- Global temperature changes. -- Global climate models and their limitations : Model's and forecasts, radiation, clouds, precipitation -- Feedback factors and radiative forcing : Carbonyl sulfide, diffuse light, iodocompunds, nitrous oxide, methane, dimethyl sulfide, aerosols -- Observations- temperature records : Paleoclimate data, urban heat islands, fingerprints, satellite data, arctic, antartic -- Observations- glaciers, sea ice, precipitation and sea level : Glaciers, precipitation trends, streamflow, sea level rise -- Solar variability and climate cycles : Cosmic rays. irradiance, temperature, perception, droughts, floods. monsoons, streamflow -- Observations- extreme weather : Droughts, floods, tropical cyclones, ENSO, precipitation variability, storms, snow, storm surges, temperature variability, wildfire -- Biological effects of carbon dioxide enrichment : Plant productivity responses, water use efficiency, amelioration of environmental stresses, acclimation, competition, respiration, carbon sequestration, other benefits, greening of earth -- Species extinction : Explaining extinction, terrestrial plants, coral reefs, polar bears -- Human health effects : Diseases, nutrition, human longevity, food v/s nature, biofuels