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The world's largest radio telescope has received its first signals from space and is now entering an intensive testing phase.

Seafood eco-labels are trustworthy – up to a point

My favourite sideswipe at those who question the ethical provenance of all they consume is provided by the TV series Portlandia. Super-earnest couple Nance and Peter demand the life story of the chicken on a restaurant menu. Eventually they head for the farm to find out for themselves.

I’m more laidback about fish, because I trust seafood eco-labels. Policing some 3m vessels across the globe is not easy but we have some accountability, including GlobalGAP, the label for certified aquaculture, and the blue tick (awarded by the Marine Stewardship Council to 281 sustainable fisheries across the world).

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As the population grows over the next 20 years half the world will be left malnourished, an independent panel of experts on food and agriculture warns.

The Australian Government is consulting on the design of mandatory reporting. The consultation is open until 28 October 2016.

The Australian Government is consulting on the design of mandatory reporting. The consultation is open until 28 October 2016.

President Barack Obama has created the first underwater national monument off the US east coast, protecting a vast ecosystem of canyons and extinct volcanoes. It is home to thousands of rare species, but is also a source of controversy.

A hedgehog officer explains how to help hedgehogs in your garden

The number of African greys has plunged to 1% of past levels, conservationists warn. But it is just one of a host of animals and plants on the continent whose future will be debated by more than 180 nations in Johannesburg this week

Perry, a five-year-old African grey parrot, is for sale on a well-known pet trade website for £750. She looks in good condition with her large black bill, red tail and white mask and her owner says she can whistle the tune of Flower of Scotland, does a passable imitation of R2D2 and is “very clever and funny”.

What Perry’s Scottish owner does not tell prospective buyers is that the African grey is close to extinction in the wild largely because of the international pet trade.

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When travelling in New Zealand, Matt Lindley, a London-based marketeer, started thinking about the flightless moa bird, which was endemic there until it became extinct around 1300AD. This gave him the idea for the series Unknown Tourism, which commemorates lost wildlife with vintage-style posters inspired by 30s to 50s air travel ads. The project, commissioned by the travel site Expedia UK and illustrated by Jon Barmby, includes the dodo as well as bringing to light the unfamiliar galliwasp. “Hopefully these posters are a fun, visual way to convey that information to a lot of people,” says Lindley. “We felt many of these animals weren’t getting the attention they deserved, so this was a way of paying tribute to them.”

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A new study by scientists in Maine found that if global warming trends continue, lobsters will struggle to survive by the year 2100

Baby lobsters might not be able to survive in the ocean’s waters if the ocean continues to warm at the expected rate.

That is the key finding of a study performed by scientists in Maine, the state most closely associated with lobster. The scientists, who are affiliated with the University of Maine Darling Marine Center and Bigelow Laboratory for Ocean Sciences, said the discovery could mean bad news for the future of one of America’s most beloved seafood treats, as well as the industry lobsters support.

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The world's biggest conference on species protection has opened in South Africa amid differing views on the survival of elephants.

We may never know the human fallout from the British nuclear tests at Maralinga but many attribute a wave of stillbirths and miscarriages to the towering radioactive clouds that rained poison across the vast area known as the prohibited zone.

Strathnairn, Highlands A squirrel at one of the wooden boxes suddenly darted along the branch and started gnawing away at the antler

For our first 29 years in this house we didn’t see a single red squirrel in the garden, but since May this year they have become daily visitors. The wooden feeder boxes on the apple trees have been a big attraction, and watching the squirrels push up the lids with their heads and reach in to get the peanuts can often be amusing.

However, some of them persist in visiting a wire feeder that was put out for birds, despite the difficulty of getting the nuts out. When the squirrels are at the feeders, I have noticed that a couple of mallard immediately head over to the bottom of the tree, to pick up any nuts or fragments they might let drop.

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Endangered plant named ‘morphy’ starts to smell like a burning cigar at Ivy League college but far worse whiffs lie in store at the weekend

A giant endangered “corpse flower” that got its nickname from its putrid smell started to bloom on Friday for the first time since 2011.

Related: 'Worse than one thousand pukes': fetid corpse flower overwhelms New York

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It’s as if this ship has invisible cat’s whiskers extending off her hull. Pricked and at the ready, they sense the weather, the temperature, the density of the atmosphere, the salinity and map the course ahead.

Horses have joined a select club of animals that can communicate by pointing to symbols, say scientists.

Will Kangaroo Island give up its electricity cable to the mainland and choose a renewable energy future?

We go in search of the superb lyrebirds that live in Victoria's Dandenong Ranges; a commercial fisherman makes dog treats from unwanted fish; and ex race horses find new homes in western Queensland.

Trailblazer in science journalism

Andrew Veitch, who has died aged 70, was one of those journalists with a sustained talent for self-invention: a talent driven by enthusiasm, curiosity and a generous sense of responsibility. It took him to Channel 4 News as science correspondent, covering health and environment stories, as well as the occasional international crisis, and then from 2003 to BBC World, working as a freelance producer, writer and presenter of documentaries made by Rockhopper Productions.

However, Andy started in print, joining the Guardian in 1971. He became a subeditor in the features department – taking the reporter’s typewritten prose and the photographer’s printed pictures and composing them into finished newspaper pages to be steered through a complex process of hot metal production – but metamorphosed into a medical correspondent.

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Conservationists urge countries to give imperilled species the highest level of protection at the global Cites summit opening on Saturday to prevent them becoming extinct in the wild

A global wildlife summit opening on Saturday is a “do or die” moment for endangered animals around the world, say conservationists, from iconic species such as elephants and lions to lesser known, but equally troubled, creatures such as devil rays and the psychedelic rock gecko.

The summit in Johannesburg brings together 181 nations to crack down on wildlife trafficking, currently a $20bn-a-year criminal enterprise, and to ensure the legal trade in food, skins, pets and traditional remedies does not threaten the survival of species. The member nations of the Convention on the International Trade in Endangered Species (Cites) will vote on proposals to toughen or loosen trade bans and regulations for over 500 species.

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