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Explore the most exciting new ideas and emerging concepts in science, health, technology and the environment with 91av’s exclusive in-depth articles, interviews and long reads.

Humans

Did the people of Easter Island independently invent writing?

Wooden tablets containing a language of glyphs called Rongorongo may be evidence that the people of Rapa Nui, also known as Easter Island, created their own writing system without the influence of European language

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A prescription nasal spray

Health

Anti-inflammatory nasal spray may ease symptoms of multiple sclerosis

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Environment

One in eight ski resorts worldwide could have no snow by 2100

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Technology

Watch an AI-powered robot dog crawl around an obstacle course

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Technology

Combatting deepfakes is an evolutionary arms race

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Sand Martin Wood in Faugh near Carlisle, Cumbria, UK, was acquired by the carbon offset company co2balance in September 2006 It has been planted with a broad mix of native trees over 6 hectares and is managed for wildlife as well as the companies offset clients Though seen as controversial by some carbon offsetting is one way of a company or individual to reduce their emissions, as the trees absorb and sequestrate carbon as they grow. (Photo by Ashley Cooper/Construction Photography/Avalon/Getty Images)

Environment

Why biodiversity offsetting is a contentious issue in conservation

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https://spaceplace.nasa.gov/gallery-earth/en/ NASA astronaut Reid Wiseman tweeted this photo from the International Space Station on Tuesday morning, Sept. 2, 2014. Credit: NASA/Reid Wiseman

Earth

It’s time to accept that we are in the Anthropocene once and for all

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A methane plume detected by NASA's AVIRIS-NG in summer 2020 indicates a leaking gas line in oil field in California

Environment

Methane leaks from US oil and gas are triple government estimates

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Health

Alzheimer’s may be caused by a build-up of fat in brain cells

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Environment

Extreme heat could trigger the worst global financial crisis ever seen

Thanks to globalisation, severe heatwaves in one part of the world can cause financial losses in another. Annual losses could reach as much as $25 trillion by 2060 if we don't curb emissions, dwarfing any previous financial crisis

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Technology

US legislators vote to ban TikTok unless it severs ties with China

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Technology

Google AI learns to play open-world video games by watching them

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Space

Europa’s seafloor may be impenetrable and inhospitable to life

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Physics

Rethinking space and time could let us do away with dark matter

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