emissions, definition of

Carbon is the chemical element with symbol C and atomic number 6. As a member of group 14 on the periodic table, it is nonmetallic and tetravalent—making four electrons available to form covalent chemical bonds. There are three naturally occurring isotopes, with 12C and 13C being stable, while 14C is radioactive, decaying with a half-life of about 5730 years. Carbon is one of the few elements known since antiquity. The name "carbon" comes from Latin language carbo, coal.

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Related Tags: pollution, climate change

A limit placed on companies regarding the amount of greenhouse gases (or other polutants) it can emit.

This is a concept often used by policymakers in reference to the problem that emissions abatement achieved in one location may be offset by increased emissions in unregulated locations. Such leakage can arise, for example, in the short term as emissions abaters reduce energy demand or timber supply, influencing world prices for these commodities and increasing the quantity emitted elsewhere; and it can arise in the longer term, for example, as industries relocate to avoid controls.

This is an economic incentive-based alternative to command-and-control regulation. In an emissions trading program, sources of a particular pollutant (most often an air pollutant) are given permits to release a specified number of tons of the pollutant. The government issues only a limited number of permits consistent with the desired level of emissions. The owners of the permits may keep them and release the pollutants, or reduce their emissions and sell the permits. The fact that the permits have value as an item to be sold or traded gives the owner an incentive to reduce their emissions.

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Related Tags: emissions trading

Emissions trading or cap and trade is usually a government-mandated, market-based approach to controlling pollution by providing economic incentives for achieving reductions in the emissions of pollutants.

• 10:10 - 10 reasons carbon emissions trading does not work
  Carbon emissions trading does not work, we give you 10 solid reasons why it won't.

• Burning wood for power worse for climate than gas equivalent, report finds
  Research casts doubt on plans by UK government to offer subsidies for carbon capture attached to the power source
• Record drop for Australia's emissions: What's working and what isn't?
  Australia's emissions had the biggest drop ever this year outside the artificial kink in the curve during COVID-19 shutdowns, but there's still a lot of work to do.
• Record drop for Australia's emissions. What's working and what isn't?
  Australia's emissions had the biggest drop ever this year outside the artificial kink in the curve during COVID-19 shutdowns, but there's still a lot of work to do.
• 'We've hit the lottery': Businesses cash in on Labor's home battery rebate
  Consumers will see the price for home batteries slashed by the federal government. With a mandate to address climate change, investment in renewables is expected to soar.
• Keir Starmer to unveil ambitious new UK climate goal at Cop29
  Exclusive: Target is 81% emissions cut compared with 1990, but activists say it must be backed by plan of action
• Data center emissions likely 662% higher than big tech claims. Can it keep up the ruse?
  Emissions from in-house data centers of Google, Microsoft, Meta and Apple may be 7.62 times higher than official tally
• Are electric cars really greener than petrol cars? We've lined up two SUVs and put them to the test
  Whether you drive an electric car or are considering making the switch, you've probably been drawn into a discussion about whether they are really better for the climate. To save you from your next barbecue encounter, we have put two cars to the test.
• Multi-billion-dollar bid to turn Pilbara's red dirt to green steel
  Australia's iron ore industry goes hand-in-hand with China. But it is a South Korean company looking to stump up billions of dollars for this green iron facility. 
• What impact does the Guardian have on the natural world?
  We have been measuring our organisation’s biodiversity footprint – here’s how we did it

Related Tags: carbon trading