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Volcano watchers suffer cuts, bruises and burns as an explosion pelts them with hot rocks and steam.

The UK's favourite yellow submarine is set to leave port for the Antarctic

Chase planes flying behind a jet are providing new insights into aircraft pollution.

Magistrates told that Phillip Cullen was spotted chasing large blues at Daneway Banks in Gloucestershire

A man used a child’s net to illegally capture specimens of Britain’s rarest butterfly, the large blue, magistrates have been told.

Phillip Cullen, 57, was allegedly spotted chasing the large blue at a nature reserve in Gloucestershire and was seen the next day at another location for the butterfly in Somerset.

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The Guardian’s picture editors bring you a selection of photo highlights from around the world, including a cunning flower mimic and a twinkly night

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Germany will use its G20 Presidency to nudge world leaders towards a global price on carbon, say officials.

The famous bird has rebounded across America, but many fear that progress is threatened by lead ammunition that ends up in carrion the eagles eat

His head twisted almost upside down and his body all but paralyzed, the bald eagle sat on its haunches, talons clenching, while two humans neared to put him in a cage. They could not save the bird from lead.

The eagle was the third this year to die from lead poisoning at the Blue Mountain Wildlife center, in north-east Oregon, where Lynn Tompkins has helped rehabilitate sick and injured birds for 30 years. “They eat things that have been shot,” Tompkins said, “whether it’s big game like deer or elk or coyotes or ground squirrels.”

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The New Zealand government has recognised the river as a 'living being' in a world-first decision.

Orphaned at a few months old and nursed back to health by a local wildlife centre, Paichit’s story has serious implications for critically endangered Sumatran elephants

Pushing on 400 kilograms, baby Paichit knows when it’s feeding time.

He lets out an appreciative bellow, a rumbling baby elephant purr from his patch in the Sumatran jungle, as soon as his mahout (keeper) Julkarnaini approaches bucket in hand.

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Expanding the Snowy Hydro will mean digging a 27-kilometre tunnel through a mountain in the middle of a national park.

Finance Minister Mathias Cormann says the government will wait for the result of the feasibility study before fully committing to the project.

More than 800,000 songbirds were killed last autumn say charities calling for UK government to help embattled military police at the Cyprus base

More than 800,000 songbirds, including blackcaps, robins and garden warblers, are estimated to have been illegally killed last autumn on a British military base in Cyprus.

New research by the RSPB and BirdLife Cyprus identified a record number of illegal and virtually invisible “mist” nets set to trap migrating birds on British territory in the Mediterranean. The number of nets discovered on Ministry of Defence (MoD) land in Cyprus has increased by 183% since monitoring began in 2002.

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Saltburn-by-the-Sea, North Yorkshire Dead man’s fingers and a lumpsucker are marooned in seaweed along the strandline

At the bottom of the cliff, a two-minute walk from the high tide line, there is a small stone-built mortuary, constructed in 1881 and formerly the temporary resting place for the bodies of shipwrecked sailors washed up on the sands.

Today, by morbid coincidence, the strandline was littered with dead man’s fingers, Alcyonium digitatum. These soft corals live in deep water and are usually only seen by divers, but late winter storms had cast some ashore amid heaps of kelp.

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An emissions cap could save Australians up to A$500 each year in fuel costs. Petrol image from www.shutterstock.com

The cheapest way for Australia to cut greenhouse gas emissions is to put a cap on car emissions. It would be so cheap, in fact, that it will save drivers money.

According to analysis from ClimateWorks, the toughest proposed standard would help Australia achieve about 6% of its 2030 emission reduction target, and save drivers up to A$500 each year on fuel.

The federal government is looking at policy options to meet Australia’s 2030 emissions target of 26-28% below 2005 levels. Last year it established a ministerial forum to look at vehicle emissions and released a draft Regulation Impact Statement for light vehicles (cars, SUVs, vans and utilities) in December.

There is no reason for the government to delay putting the most stringent emissions standard on cars.

Cars getting cleaner, but not in Australia

Australia currently does not have carbon dioxide emission standards on light vehicles. CO₂ standards work by improving the overall efficiency of the vehicle (the amount of CO₂ emitted per kilometre). These are different from fuel quality standards, which regulate the quality of fuels used by vehicles, and noxious emissions standards, which monitor a car’s emissions of noxious gases and particulates.

Currently, CO₂ emission standards cover over 80% of the global light automotive market. The lack of standards here means that Australia’s cars are less efficient than in many other countries, and this gap is set to widen.

In 2015, the average efficiency of new cars sold in Australia (in grams of CO₂ emitted per km) was 184g per km. In the European Union, the average efficiency of new cars was 120g per km for passenger vehicles and 168g per km for light commercial vehicles (such as vans used as couriers). In the United States – the spiritual home of the gas-guzzler – it is 183g per km and set to improve to 105g per km in 2025.

Australia’s cars account for about 10% of Australia’s greenhouse gas emissions, which are set to grow to 2030 if the market is left to its own devices.

Helping meet Australia’s climate target

In our submission to the draft Regulation Impact Statement, we confirmed that if the most stringent proposed target (105g per km) were introduced as proposed from 2020 to 2025, it would deliver 6% of Australia’s 2030 emissions reduction target. This would save A$49 per tonne of CO₂. Although there would be some costs in introducing the scheme, it would save A$13.9 billion by 2040 overall.

This saves an extra additional 41 million tonnes of CO₂ by 2030, 140 million tonnes by 2040, and an extra A$8.1 billion overall by 2040 compared with the least stringent proposed target (135g per km by 2025).

However, we found that a two-year delay would add an extra 18 million tonnes of CO₂ to the atmosphere, or 2% of the government’s 2030 carbon budget.

Any reductions not achieved in vehicle emissions will need to be made up in other sectors, or purchased through international carbon permits, most likely at a higher cost.

Savings on fuel and health

The most stringent target delivers A$27.5 billion in total fuel savings by 2040, A$16.7 billion more than the least stringent standard.

The draft regulations show that for an average car this is equal to a saving of A$197-295 a year for a driver doing 15,000km per year, and A$328-493 for a driver doing 25,000km per year.

To put this in context, based on 2012 household energy costs data, this would cut household energy costs by up to 10%, with even greater savings for low-income households.

But a two-year delay of the most stringent standard would also result in new car owners paying an extra A$4.9 billion in fuel costs by 2030, and an extra A$8.3 billion to 2040.

The reduction in fuel use will also potentially reduce air pollution, resulting in better health outcomes.

The most stringent standard will save deliver 2.6 times as much fuel as the least stringent standard, so should reduce health costs by a similar proportion. However, the introduction of emissions standards would need to occur in a way that does not increase noxious emissions such as nitrogen oxides.

No reason to delay

Given the enormous benefit of a more stringent standard, the government should also investigate an even more ambitious target.

Our research shows a standard of 95g per km by 2025 will deliver even greater benefits and is technically feasible based on achievements in other markets. The EU is aiming for this level by 2020.

While we also support improving fuel quality to reduce noxious emissions, research by the International Council on Clean Transportation (ICCT) shows that we do not need to improve Australia’s fuel quality standards before the introduction of standards to improve the overall efficiency of the vehicle.

Similarly, despite discrepancies between on-road and in-lab performance of vehicles as seen in the Volkswagen emissions scandal, a standard will still provide significant savings to consumers and the environment.

Standards alone are not the silver bullet. We’ll need a range of other measures to support emissions standards on cars to help improve efficiency and build consumer awareness of fuel-efficient vehicles.

With Australian car manufacturing due to cease by the end of 2017, it is an ideal time to ensure that new cars bought into Australia are the most efficient available. This will set us on the path towards lower vehicle emissions while reducing costs for motorists and improving health.

ClimateWorks is funded by philanthropy through The Myer Foundation with Monash University. ClimateWorks Australia also periodically conducts research with funding from Federal, State and local governments and from private companies; all our work is focused on supporting strong emissions reductions in Australia. The author has no other relevant affiliations

ClimateWorks is funded by philanthropy through The Myer Foundation with Monash University. ClimateWorks Australia also periodically conducts research with funding from Federal, State and local governments and from private companies; all our work is focused on supporting strong emissions reductions in Australia. The author has no other relevant affiliations.

ABC political commentators are in the nasty habit of parroting fossil fuel myths as if they are fact. This is a problem for viewers.

CEFC says it working with SA government on finance package to support state's 100MW battery storage project.

Clarke and Dawe nail Australia's energy debate in hilarious interview with "Wal Socket."

Four days after laying off an estimated 400 employees, Sungevity has filed for Chapter 11 bankruptcy.

First phase of AGL Energy's Adelaide 5MW solar and storage VPP trial goes live, linking 60 battery storage systems.

Two large-scale batteries will be trialled as back-up power at an islanded 170MW power station in Carnarvon WA.