Energy & Green Tech

Getting the carbon out of India's heavy industries

The world's third largest carbon emitter after China and the United States, India ranks seventh in a major climate risk index. Unless India, along with the nearly 200 other signatory nations of the Paris Agreement, takes ...

Hi Tech & Innovation

Thermal drones seek survivors after deadly Italy glacier collapse

Rescuers used thermal drones Monday to search for possible survivors trapped under ice after an avalanche set off by the collapse of the largest glacier in the Italian Alps killed at least six people and injured eight others.

Energy & Green Tech

Modeling the climate-energy consumption link in Tibet

Researchers from the Institute of Tibetan Plateau Research (ITP) of the Chinese Academy of Sciences have investigated how climate influences the amount of electricity used in Tibetan homes based on machine learning.

Energy & Green Tech

Assessing the environmental impact of nuclear power generation

In a constantly evolving world, rapidly growing populations coupled with urbanization and industrialization are leading to an ever-increasing demand for energy. The challenge today lies in meeting these energy requirements ...

Energy & Green Tech

Indy 500 waves green flag on sustainability with lofty goals

Parked a few feet from the iconic pagoda at Indianapolis Motor Speedway is a reimagined E-Z-Go golf cart that's essentially filled with garbage. Plastic bottles tossed into recycling bins months ago are now neatly stacked ...

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Global warming

Global warming is the increase in the average temperature of the Earth's near-surface air and oceans since the mid-20th century and its projected continuation. Global surface temperature increased 0.74 ± 0.18 °C (1.33 ± 0.32 °F) during the last century. The Intergovernmental Panel on Climate Change (IPCC) concludes that increasing greenhouse gas concentrations resulting from human activity such as fossil fuel burning and deforestation are responsible for most of the observed temperature increase since the middle of the 20th century. The IPCC also concludes that variations in natural phenomena such as solar radiation and volcanoes produced most of the warming from pre-industrial times to 1950 and had a small cooling effect afterward. These basic conclusions have been endorsed by more than 45 scientific societies and academies of science, including all of the national academies of science of the major industrialized countries.

Climate model projections summarized in the latest IPCC report indicate that the global surface temperature will probably rise a further 1.1 to 6.4 °C (2.0 to 11.5 °F) during the twenty-first century. The uncertainty in this estimate arises from the use of models with differing sensitivity to greenhouse gas concentrations and the use of differing estimates of future greenhouse gas emissions. Some other uncertainties include how warming and related changes will vary from region to region around the globe. Most studies focus on the period up to the year 2100. However, warming is expected to continue beyond 2100 even if emissions stop, because of the large heat capacity of the oceans and the long lifetime of carbon dioxide in the atmosphere.

An increase in global temperature will cause sea levels to rise and will change the amount and pattern of precipitation, probably including expansion of subtropical deserts. The continuing retreat of glaciers, permafrost and sea ice is expected, with warming being strongest in the Arctic. Other likely effects include increases in the intensity of extreme weather events, species extinctions, and changes in agricultural yields.

Political and public debate continues regarding climate change, and what actions (if any) to take in response. The available options are mitigation to reduce further emissions; adaptation to reduce the damage caused by warming; and, more speculatively, geoengineering to reverse global warming. Most national governments have signed and ratified the Kyoto Protocol aimed at reducing greenhouse gas emissions. A small number of scientists dispute the consensus on global warming science.

This text uses material from Wikipedia, licensed under CC BY-SA