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World leaders gather for UN General Assembly
The man trying to save bats' lives
Scotland’s Sphinx snow patch is in its throes – in pictures
The Sphinx is the closest Britain comes to having a glacier. It has disappeared just six times in the last 300 years, but this year it is almost gone. Murdo MacLeod joins snow expert Iain Cameron to study the state of Scotland’s permanent snow
“It’s a very sorry sight,” says Iain Cameron. It is late August and we are standing in front of Scotland’s very own Sphinx. It never had claws, paws, nor a mysterious countenance, but if it once had they would have melted away, just as the rest is about to do. “Grim,” says Cameron with gravel in his tone. “It’s pretty much in its death throes.”
Continue reading...Haaf netting on the Lune: 'Fighting a big fish really gets the adrenaline going'
Sunderland Point, Lancaster At the river’s edge, retinues of curlew, lapwing and redshank assembled and lifted again, landing in each other’s wake
Even as Margaret Owen pulled on her fishing “yallers”, we knew there was little chance of a salmon. I had been waiting for weeks to see Margaret in action, but the salmon simply haven’t returned to the river Lune this year, and the season was about to end.
Continue reading...Rooftop solar and storage – cheaper than subsidising old coal
S.A. grid demand plunges to record low as rooftop solar share hits 48%
Rhino horn smuggled as jewellery
CSIRO breeds spotted handfish to save species from extinction
Fish, which is endemic to Tasmania, was the first Australian marine animal to be listed as critically endangered
Scientists have begun a captive breeding program for the spotted handfish, 11 years after it became the first Australian marine animal to be listed as critically endangered.
Endemic to Tasmania, the spotted handfish or Brachionichthys hirsutus looks like a tadpole in the late stages of development, with a fin atop its head to lure unsuspecting prey and the sour expression of a British bulldog.
Continue reading...Ross River solar farm – site preparation underway
A wheelchair in the shearing shed and breaking in brumbies
The Silent Forest: Pangolins
Three NSW fisheries - Agency application 2017
US solar plant costs fall another 30 per cent in just one year
Scientists use light to purge defects from solar cells
The night heron: at home on the Somerset Levels
Devastated land, scarred by peat digging, has been transformed into suitable habitats for birds unfamiliar to the UK
The news that night herons had bred in Britain for the first time barely registered on the ornithological Richter scale. Perhaps this was because it happened on the Somerset Levels, the UK’s new hotspot for long-legged wading birds.
Over the past couple of decades, first little egret, then little bittern, great white and cattle egrets, and now night herons, have flown across the Channel. Many ended up on the Somerset Levels, liked what they saw, and settled down here. Meanwhile, bitterns came over from East Anglia, while cranes were given a helping hand from us, via a reintroduction scheme. Now that we can see five or six of these exotic newcomers in a day, we have become rather blase about them.
Continue reading...How palm trees stand tall in the face of a hurricane
As Hurricane Irma battered the Caribbean, trees aerodynamically adapted to strong winds stood firm
When Storm Aileen ripped across the UK last week the worst of the winds brought down trees, snapped off branches and shredded leaves, made worse because the trees were in full leaf and caught the wind like a sail. Compare that with the palm trees that stood up to Hurricane Irma’s immensely stronger winds, which would have torn British trees to shreds. The palm trees simply bent over at crazy angles and then bounced back again.
Related: Scaling up our response to super-hurricanes
Continue reading...Curious Kids: What happens if a venomous snake bites another snake of the same species?
This is an article from Curious Kids, a series for children. The Conversation is asking kids to send in questions they’d like an expert to answer. All questions are welcome – serious, weird or wacky!
If a lethally poisonous snake bites another lethally poisonous snake of the same species does the bitten snake suffer healthwise or die? – Ella, age 10, Wagga Wagga.
Hi Ella,
That’s a great question.
If a venomous snake is bitten by another venomous snake of the same species, (for example during a fight or mating), then it will not be affected.
However, if a snake is bitten by a venomous snake of another species, it probably will be affected.
This is probably because snakes have evolved to be immune to venom from their own species, because bites from mates or rivals of the same species probably happen fairly often.
But a snake being regularly bitten by another snake from a different species? It’s unlikely that would happen very often, so snakes haven’t really had a chance to develop immunity to venom from other species.
Read more: Guam’s forests are being slowly killed off – by a snake
Scientists often collect venom from snakes to create anti-venoms. Kalyan Varma/Wikimedia Snakes can break down venom in the stomachMany people believe that snakes are immune to their own venom so that they don’t get harmed when eating an animal it has just injected full of venom.
But in fact, they don’t need to be immune. Scientists have found that special digestive chemicals in the stomachs of most vertebrates (animals with backbones) break down snake venom very quickly. So the snake’s stomach can quickly deal with the venom in the animal it just ate before it has a chance to harm the snake.
People that have snakes as pets often see this. If one venomous snake bites a mouse and injects venom into it, for example, you can then feed that same dead mouse to another snake. The second snake won’t die.
Read more: Curious Kids: How do snakes make an ‘sssssss’ sound with their tongue poking out?
The eastern brown snake, which is found in Australia, is one of the most venomous snakes in the world. Flickr/Justin Otto, CC BY The difference between venom and poisonBy the way, scientists usually use the word “venomous” rather than “poisonous” when they’re talking about snakes. Many people often mix those words up. Poisons need to be ingested or swallowed to be dangerous, while venoms need to be injected via a bite or a sting.
Some snakes can inject their toxins into their prey, which makes them venomous. However, there seem to be a couple of snake species that eat frogs and can store the toxins from the frogs in their body. This makes them poisonous if the snake’s body is eaten. Over time, many other animals will have learned that it is not safe to eat those snakes, so this trick helps keep them safe.
Hello, curious kids! Have you got a question you’d like an expert to answer? Ask an adult to send your question to us. You can:
* Email your question to curiouskids@theconversation.edu.au
* Tell us on Twitter by tagging @ConversationEDU with the hashtag #curiouskids, or
* Tell us on Facebook
Please tell us your name, age and which city you live in. You can send an audio recording of your question too, if you want. Send as many questions as you like! We won’t be able to answer every question but we will do our best.
Jamie Seymour 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.
Top Trump officials signal US could stay in Paris climate agreement
Secretary of state Rex Tillerson and national security adviser HR McMaster both indicated the US is open to negotiations on staying in the accord
Senior Trump administration officials on Sunday signalled a further softening of America’s resolve to leave the Paris climate accord, amid signs that the issue will be discussed at the United Nations general assembly in New York this week.
Secretary of state Rex Tillerson and national security adviser HR McMaster both indicated that the US is open to negotiations on staying in the landmark international agreement to limit mankind’s role in global warming.
Continue reading...How regulators could kill off Australia's water recycling industry
A world-leading system in Sydney’s Central Park precinct helps residents reuse up to 97% of their water. But a pricing change threatens future schemes
In the basement of a Sydney housing development is the world’s largest water recycling plant in a residential building.
Normal apartments put more than 90% of the water they consume back into the sewer. But thanks to the recycling plant, units in Central Park, built on the site of the old Carlton brewery close to the CBD, return just 3%.
Continue reading...Beware nuclear industry’s fake news on being emissions free | Letters
I wholeheartedly agree with much of your editorial (14 September), as the economics of new nuclear is weaker than ever at a time when renewables are coming in cheaper year on year. You point out the crisis in the funding of renewables and we could not agree more. The UK desperately needs to reboot financial support for decentralised energy in order to maximise long-term benefits for all. Councils, in particular, are calling for the restoration of feed-in tariffs and other support that has been instrumental in the creation of innovative, local, low-carbon energy schemes, Passivhaus-accredited buildings, and energy efficiency programmes for dealing with the scourge of fuel poverty.
While the dramatic cost reductions in offshore wind are to be welcomed, it has to be joined with renewed support for decentralised energy projects, approval for tidal energy schemes and the resumption of support for solar and onshore wind. The government must see that the energy landscape has changed dramatically. An energy review and reboot is urgently required.
Cllr David Blackburn
Vice-chair, UK and Ireland Nuclear Free Authorities