Energy & Green Tech

New Zealand to help pay for cleaner cars to reduce emissions

New Zealand's government said Monday it will help pay for lower-income families to scrap their old gas guzzlers and replace them with cleaner hybrid or electric cars as part of a sweeping plan to reduce greenhouse gas emissions.

Energy & Green Tech

Rare overhaul of powerful US nuclear test reactor completed

Scientists at the Idaho National Laboratory have completed a rare overhaul of one of the world's most powerful nuclear test reactors and normal operations are expected to resume later this spring, officials said Monday.

Energy & Green Tech

Biden's biofuel: Cheaper at the pump, but high environmental cost

In an effort to ease Americans' pain at the gas pump, President Joe Biden has announced his administration will ease restrictions on the sale of E15—gasoline that includes 15 percent ethanol—and new investments in biofuels ...

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Greenhouse gas

Greenhouse gases are gases in an atmosphere that absorb and emit radiation within the thermal infrared range. This process is the fundamental cause of the greenhouse effect. Common greenhouse gases in the Earth's atmosphere include water vapor, carbon dioxide, methane, nitrous oxide, and ozone. In our solar system, the atmospheres of Venus, Mars and Titan also contain gases that cause greenhouse effects. Greenhouse gases greatly affect the temperature of the Earth; without them, Earth's surface would be on average about 33°C (59°F) colder than at present.

Human activities since the start of the industrial era around 1750 have increased the levels of greenhouse gases in the atmosphere. The 2007 assessment report compiled by the IPCC observed that "changes in atmospheric concentrations of greenhouse gases and aerosols, land cover and solar radiation alter the energy balance of the climate system", and concluded that "increases in anthropogenic greenhouse gas concentrations is very likely to have caused most of the increases in global average temperatures since the mid-20th century".

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