Global warming is a serious issue affecting planet Earth. It refers to the raise in the Earth’s surface temperature like the atmosphere, land and water due to the harmful emissions of green house gases, chloro fluro carbons and other industrial toxic gases. Global warming is also referred to as climate change. Global warming is attributed to the green house effect which is absorption of the thermal radiation by the green house gases like carbon dioxide,water vapor, ozone, nitrous oxide and methane; and re-radiating the heat in all directions. Part of the re-radiated heat goes back to the surface and the atmosphere thereby increasing the temperature. This is the reason for the ever increasing earth’s atmospheric temperature since time immemorial. The green house gases trap the heat within the surface and troposphere resulting in temperature raise. This on the whole results in ocean water level raise, melting of the ice caps in the North and South Pole and extreme weather conditions in few places like drought, heat waves, heavy rainfall, flooding, acid rains and extinction of animal and plant species.
Human activity has contributed a lot in global warming like burning of the fossil fuels, felling of trees, releasing industrial toxic gases in the atmosphere etc. Particulates and soot released from burning of plastic wastes and harmful gases from chimneys causes drastic increase/decrease in the surface temperature. Volcanic eruptions, dust, ash and soot also contribute to the rise but in a nominal way. The solution to prevent mother Earth from dying is afforestation, conserving fossil fuels,releasing toxic gases in a safer way, avoiding smoking, curbing the use of plastics and disposal of plastic/e-waste in a safer way that doesn’t harm the earth and following Eco friendly practices in waste segregation. Causing awareness among people is important to conserve the natural resources.Global warming posters can cause awareness among people in the social networking sites, books, advertisements etc wherein the message can be conveyed in an effective manner so that people understand the grim situation and act accordingly. Some of the posters like tropical flowers asking for help, ice bergs melting, white polar bears turning into brown color, sea levels rising, origin of new species – half parrot and half fish, a maize plant with fluffy corns all popped up into popcorn’s because of the rising heat are excellent in conveying the message to the people. A picture speaks many words!