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The rules of acceptable behavior in the national parks have changed drastically over the past 100 years. It was once legal to drive through trees, ride waterfalls, and boil an egg in the Yellowstone hot springs – but now such actions are generally frowned upon

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With respect to Professor MacDonald (Letters, 22 August), a recently published analysis of peer-reviewed literature between 2009 and 2015 demonstrates that 84% of the studies contain findings that indicate public health hazards, elevated risks or adverse health outcomes in fracking areas, all of which were confident no doubt that their regulations were world class. There are similar high levels of anxiety concerning water and air quality in fracking areas.

The professor does not share with us what it is, other than the industry’s assertion, that makes our UK system of regulation, not yet tested for shale, so watertight. Her last paragraph sits ill from an academic and hardly withstands the most cursory scrutiny: how can an untried system be world class – despite the “study after study undertaken in the UK by renowned universities”? How do we know? It is not enough that Public Health England “recognise that concentrations [of radon released by fracking to the environment] are not expected to result in significant additional radon exposure”. What kind of assurance is this?
David Cragg-James
York

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A tiny marsupial lion, extinct for at least 18 million years, is named after Sir David Attenborough after fossilised remains are found in remote Australia.

The south-eastern edge of Yellowstone National Park in Wyoming takes a week of backpacking to hike in and out and is populated by wolves and grizzly bears

• 100 years of the National Park Service: readers’ photo and stories
• 10 of the least-visited US national parks

The most remote place in the contiguous 48 states, the farthest you can go to get away from it all – the only place you can be more than 20 miles from a road – is deep in the south-eastern corner of Yellowstone National Park in Wyoming.

Related: 'We need to preserve this beauty': your memories of US national parks

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Scientists have used satellite images to study how the water on the Earth's surface has changed over the last 30 years.

To celebrate 100 years of the National Park Service, we asked you to share what America’s natural wonders mean to you

The National Park Service turns 100 this week, and to celebrate its century of protecting American’s most treasured places, we asked you to share your memories and photos of the parks. Here’s a selection of your contributions. You can see all of them – and share your own – here.

Related: Celebrating 100 years of the National Park Service: readers' photo and stories

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The first almost complete skeleton of a dodo to come up for sale in nearly 100 years is expected to fetch a six-figure sum at auction.

Amateur rocket enthusiasts have gathered in Scotland to mark 30 years of aiming for the skies.

Majority of British public polled support protections at least as strong as current EU rules and many think farming subsidies should focus more on environmental protection

An overwhelming majority of the British public polled want new post-Brexit laws protecting wildlife and the countryside to be at least as strong as the EU rules currently in place, according to a opinion poll published on Thursday.

Many also want a new farming subsidy regime to emphasise environmental protection more than the EU’s existing Common Agricultural Policy and the vast majority want an EU ban on neonicotinoid pesticides, known to harm bees and other pollinators, to remain in place.

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A lawnmower has been blamed for wrongly triggering sensors that predict when the Northern Lights will be visible in the UK.

Microsoft's Excel has been blamed for some errors in academic papers on genomics.

The Greenland Ice Sheet is losing 110,000 Olympic size swimming pools worth of water each year.

A new study measures the loss of ice from one of world’s largest ice sheets. They find an ice loss that has accelerated in the past few years, and their measurements confirm prior estimates.

As humans emit heat-trapping gases, we expect to see changes to the Earth. One obvious change to be on the lookout for is melting ice. This includes ice atop mountains, ice floating in cold ocean waters, and the ice within large ice sheets or glaciers. It is this last type of ice loss that most affects ocean levels because as the water runs into the oceans, it raises sea levels. This is in contrast to melting sea ice – since it is already floating in ocean waters, its potential to raise ocean levels is very small.

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When it comes to conserving the world’s oceans, bigger isn’t necessarily better. Globally, there has been an increasing trend towards placing very large marine reserves in remote regions. While these reserves help to meet some conservation targets, we don’t know if they are achieving their ultimate goal of protecting the diversity of life.

In 2002, the Convention on Biological Diversity called for at least 10% of each of the world’s land and marine habitats to be effectively conserved by 2010. Protected areas currently cover 14% of the land, but less than 3.4% of the marine environment.

Australia’s marine reserve system covers more than a third of our oceans. This system was based on the best available information and a commitment to minimising the effects of the new protected areas on existing users. However, since its release the system has been strongly criticised for doing little to protect biodiversity, and it is currently under review.

In a new study published in Scientific Reports, we looked at the current and proposed marine reserves off northwest Australia – an area that is also home to significant oil and gas resources. Our findings show how conservation objectives could be met more efficiently. Using technical advances, including the latest spatial modelling software, we were able to fill major gaps in biodiversity representation, with minimal losses to industry.

A delicate balance

Australia’s northwest supports important habitats such as mangrove forests, seagrass beds, coral reefs and sponge gardens. These environments support exceptionally diverse marine communities and provide important habitat for many vulnerable and threatened species, including dugongs, turtles and whale sharks.

This region also supports valuable industrial resources, including the majority of Australia’s conventional gas reserves.

A 2013 global analysis found that regions featuring both high numbers of species and large fossil fuel reserves have the greatest need for industry regulation, monitoring and conservation.

Proposed and existing state and Commonwealth marine reserves in northwest Australia shown in relation to petroleum leases. Cordelia Moore Conservation opportunitites

Not all protected areas contribute equally to conserving species and habitats. The level of protection can range from no-take zones (which usually don’t allow any human exploitation), to areas allowing different types and levels of activities such tourism, fishing and petroleum and mineral extraction.

A recent review of 87 marine reserves across the globe revealed that no-take areas, when well enforced, old, large and isolated, provided the greatest benefits for species and habitats. It is estimated that no-take areas cover less than 0.3% of the world’s oceans.

In Australia’s northwest, no-take zones cover 10.2% of the area, which is excellent by world standards in terms of size. However, an analysis of gaps in the network reveal opportunities to better meet the Convention on Biological Diversity’s recommended minimum target level of representation across all species and features of conservation interest.

We provided the most comprehensive description of the species present across the region enabling us to examine how well local species are represented within the current marine reserves. Of the 674 species examined, 98.2% had less than 10% of their habitat included within the no-take areas, while more than a third of these (227 species) had less than 2% of their habitat included.

Into the abyss

Few industries in this region operate in depths greater than 200 metres. Therefore, the habitats and biodiversity most at risk are those exposed to human activity on the continental shelf, at these shallower depths.

However, the research also found that three-quarters of the no-take marine reserves are sited over a deep abyssal plain and continental rise within the Argo-Rowley Terrace (3,000-6,000m deep). These habitats are unnecessarily over-represented (85% of the abyss is protected), as their remoteness and extreme depth make them logistically and financially unattractive for petroleum or mineral extraction anyway.

The majority of the no-take marine reserves lie over a deep abyssal plain. Cordelia Moore

Proposed multiple-use zones in Commonwealth waters provide some much-needed extra representation of the continental shelf (0-200m depth). However, all mining activities and most commercial fishing activities are permissible pending approval. This means that the management of these multiple-use zones will require some serious consideration to ensure they are effective.

A win for conservation and industry

An imbalance in marine reserve representation can be driven by governments wanting to minimise socio-economic costs. But it doesn’t have to be one or the other.

Our research has shown that better zoning options can maximise the number of species while still keeping losses to industry very low. Our results show that the 10% biodiversity conservation targets could be met with estimated losses of only 4.9% of area valuable to the petroleum industry and 7.2% loss to the fishing industry (in terms of total catch in kg).

Examples of how the no-take reserves could be extended or redesigned to represent the region’s unique species and habitats. Cordelia Moore

Management plans for the Commonwealth marine reserves are under review and changes that deliver win-win outcomes, like the ones we have found, should be considered.

We have shown how no-take areas in northwest Australia could either be extended or redesigned to ensure the region’s biodiversity is adequately represented. The cost-benefit analysis used is flexible and provides several alternative reserve designs. This allows for open and transparent discussions to ensure we find the best balance between conservation and industry.

Cordelia Moore has received funding from the University of Western Australia, the Australian Institute of Marine Science and CSIRO.

Clay Bryce receives funding from the Western Australian Museum and Woodside Energy.

Hugh Possingham receives funding from The Australian Research Council, The Department of The Environment (Australia) and a lot of other groups. He is affiliated with the Wentworth Group of Concerned Scientists, Bush Heritage Australia and sits on heaps of boards and committees.

Oliver Berry receives funding from The Western Australian Marine Science Institution.

Romola Stewart has previously received funding from PEW Charitable Trusts Australia.

Ben Radford does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond the academic appointment above.

How long until we can send someone to the newly discovered earth-like planet, Proxima b? RN Drive puts the latest science news through the Research Filter.

Cast: AdelaideSBN

Cast: AdelaideSBN

Old Warden, Bedfordshire In this parched landscape it was clear the hedgerow fruit had not ripened a moment too soon for the badgers

It took only a few dry weeks for the fields on the plateau above the village to forget that it had ever rained. The clay soil was beginning to crack, the footpath had turned to a sun-baked dirt track and there was no yield underfoot. Every bump and stone was hard and uncompromisingly contoured, jabbing at an instep, stubbing a toe.

The worms had become dustbowl refugees in this parched landscape, sinking deep underground. Far below my feet, they would be aestivating, bunched up in knots, coated in their own mucus in a hibernation-like suspension of active life, waiting for moisture to come again.

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Gas has a problem. Without a carbon price, it's more expensive than coal. With a carbon price, it struggles to compete with renewables and storage.

Large scale solar contracts fall to $US30/MWh as solar prices fall in US - on rooftops and for solar farms.

A solar and storage energy management system developed by CSIRO and backed by AMP Capital has been launched in Australia.