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A rare female brown bear had to be shot in the Italian Alps as it threatened humans, a governor says.

The Yale group led by Anthony Leiserowitz does some brilliant work

This is an unabashed endorsement of an important group. I have no affiliation with them or conflicts of interest. They aregreat, period.

The ability to convey complex climate science to a wide-ranging audience is a golden attribute, something very few can achieve. This characteristic makes the Yale Climate Connections group unique.

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The lesser horseshoe bats moved in to the belly of a triceratops at the Wildlife and Dinosaur Park.

South Australia government chooses solar tower and storage for its power needs, after SoalrReserve wind tender for baseload power with $78/MWh for 150MW plant in Port Augusta. South Australia suggests it is beginning of the end for coal.

Battery powered vehicles are not as green as they are promoted due to the environmental economic, and geopolitical consequences from mining for minerals to their eventual disposal.

The platypus is a unique curiosity only found in Australia with a worldwide fascination but we don't know that much about them or what's threatening their populations.

Federal treasurer says cheap new coal power a "myth", federal energy minister says it must be considered – even if the market disagrees.

Powerwall, as part of the newly created Tesla Tiny House is hitting the road and making its way around Australia.

Rye Harbour, East Sussex The omens are bad for the whimbrel, a summer visitor that has all but disappeared from the estuary

Only a few years ago, they used to stage whimbrel walks at Rye Harbour nature reserve. In late summer, these birds, which look like small dark curlew, would stream from estuary to estuary in their thousands, on their way from breeding grounds on Orkney and Shetland to winter on the west African coast.

Now, you’re lucky to see a single one out on the salt marshes amid the wheeling terns and plover, and Rye Harbour has re-branded its walks.

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Market Forces will lodge a new shareholder resolution against Commonwealth Bank after its climate change position statement released today fell well short of its publicly-made 2 degree commitments.

SEA Electric says $5m CEFC loan will help meet growing demand for technology that converts commercial trucks and vans to electric vehicles.

The president promised a surge of jobs and tax revenue from oil. His policies won’t deliver either one.

To support the Paris Agreement’s goal of limiting temperature increase to 1.5°C, Europe will need a CO2-neutral electricity supply by 2045.

First it was the networks, then generators. Now it's the retail arms gouging consumers. A bipartisan review of Victoria's retail electricity market reveals a failed experiment that has delivered the most inflated power bills in Australia.

Construction at the $360 million Mount Emerald Wind Farm near Mareeba reached an important milestone last week when the first of 53 turbine foundations was put in place.

Company to deliver more than 500MW in Australia over the next 12 Months

Cassini is on its final five full orbits of Saturn, getting close enough to directly "taste" its gases.

Growth of intensive units has potential to increase antibiotic resistance and could result in spread of bird flu beyond region

The use of antibiotics in factory farms in Asia is set to more than double in just over a decade, with potentially damaging effects on antibiotic resistance around the world.

Factory farming of poultry in Asia is also increasing the threat of bird flu spreading beyond the region, with more deadly strains taking hold, according to a new report from a network of financial investors.

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Social media posts, such as this image uploaded to Flickr, can be repurposed for reef health monitoring. Sarah Ackerman/Flickr/Wikimedia Commons, CC BY

Social media platforms such as Twitter and Instagram could be a rich source of free information for scientists tasked with monitoring the health of coral reefs and other environmental assets, our new research suggests.

Ecosystems are under pressure all over the world, and monitoring their health is crucial. But scientific monitoring is very expensive, requiring a great deal of expertise, sophisticated instruments, and detailed analysis, often in specialised laboratories.

This expense – and the need to educate and engage the public – have helped to fuel the rise of citizen science, in which non-specialist members of the public help to make observations and compile data.

Our research suggests that the wealth of information posted on social media could be tapped in a similar way. Think of it as citizen science by people who don’t even realise they’re citizen scientists.

Read more: Feeling helpless about the Great Barrier Reef? Here’s one way you can help.

Smartphones and mobile internet connections have made it much easier for citizens to help gather scientific information. Examples of environmental monitoring apps include WilddogScan, Marine Debris Tracker, OakMapper and Journey North, which monitors the movements of Monarch butterflies.

Meanwhile, social media platforms such as Facebook, Twitter, Instagram and Flickr host vast amounts of information. While not posted explicitly for environmental monitoring, social media posts from a place like the Great Barrier Reef can contain useful information about the health (or otherwise) of the environment there.

Picture of health? You can learn a lot from holiday snaps posted online. Paul Holloway/Wikimedia Commons, CC BY-SA

Twitter is a good resource for this type of “human sensing”, because data are freely available and the short posts are relatively easy to process. This approach could be particularly promising for popular places that are visited by many people.

In our research project, we downloaded almost 300,000 tweets posted from the Great Barrier Reef between July 1, 2016 and March 17, 2017.

After filtering for relevant keywords such as “fish”, “coral”, “turtle” or “bleach”, we cut this down to 13,344 potentially useful tweets. Some 61% of these tweets had geographic coordinates that allow spatial analysis. The heat map below shows the distribution of our tweets across the region.

Tweet heat map for the Great Barrier Reef. Author provided

Twitter is known as place for sharing instantaneous opinions, perceptions and experiences. It is therefore reasonable to assume that if someone posts a tweet about the Great Barrier Reef from Cairns they are talking about a nearby part of the reef, so we can use the tweet’s geocoordinates as indicators of the broad geographic area to which the post is referring. Images associated with such tweets would help to verify this assumption.

Our analysis provides several interesting insights. First, keyword frequencies highlight what aspects of the Great Barrier Reef are most talked about, including activities such as diving (876 mentions of “dive” or “diving”, and 300 of “scuba”), features such as “beaches” (2,909 times), and favoured species such as “coral” (434) and “turtles” (378).

The tweets also reveal what is not talked about. For example, the word “bleach” appeared in only 94 of our sampled tweets. Furthermore, our results highlighted what aspects of the Great Barrier Reef people are most happy with, for example sailing and snorkelling, and which elements had negative connotations (such as the number of tweets expressing concern about dugong populations).

Casting the net wider

Clearly, this pool of data was large enough to undertake some interesting analysis. But generally speaking, the findings are more reflective of people’s experiences than of specific aspects of the environment’s health.

The quality of tweet information with regard to relevant incidents or changes could, however, be improved over time, for example with the help of a designated hashtag system that invites people to post their specific observations.

Read more: Survey: two-thirds of Great Barrier Reef tourists want to ‘see it before it’s gone’.

Similar alert systems and hashtags have been developed for extreme events and emergency situations, for example by the New South Wales Fire Service.

Tweets also often contain photographs – as do Instagram and Flickr posts – which can carry useful information. An image-based system, particularly in cases where photos carry time and location stamps, would help to address the lack of expertise of the person posting the image, because scientists can analyse and interpret the raw images themselves.

The Great Barrier Reef is, of course, already extensively monitored. But social media monitoring could be particularly beneficial in countries where more professional monitoring is unaffordable. Popular destinations in the Pacific or Southeast Asia, for example, could tap into social media to establish systems that simultaneously track visitors’ experiences as well as the health of the environment.

While it is early days and more proof-of-concept research is needed, the technological possibilities of Big Data, machine learning and Artificial Intelligence will almost certainly make socially shared content a useful data source for a wide range of environmental monitoring in the future.

Susanne Becken receives funding from National Environmental Science Program. She is a member of the Pacific Asia Travel Association's Sustainability and Social Responsibility committee.

Bela Stantic receives funding from receives funding from National Environmental Science Program.

Rod Connolly receives funding from National Environmental Science Program and Australian Research Council.

If we really want to tackle particle pollution we need carbon-free electricity and, even better, walk or cycle over short distances

Will our streets be pollution free when the last petrol and diesel cars are sold in the UK in just over two decades time? Sadly not. This is for two main reasons. First, we will still have diesel lorries and buses. Second, electric cars still release particle pollution into the air from wearing tyres, brakes and road surfaces. Already more particle pollution comes from wear than from the exhausts of modern vehicles.

Related: The polluting effect of wear and tear in brakes and tyres

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