Nature Journal
Nature Journal

There are flying snakes and their shimmy helps them glide

Email sent: Jul 1, 2020 1:38pm

Is this your brand on Milled? You can claim it.

What matters in science | 
View this email in your browser Wednesday 1 July 2020
Nature Briefing

Hello Nature readers,
Today we learn that there are flying snakes and their wiggle helps them glide. Plus, we grapple with 40-kilogram quantum objects and dig into the difficult question of herd immunity to COVID-19.

Click to watch
Flying snakes (Chrysopelea) are the only known limbless vertebrates capable of flight. ()

Shimmy helps snakes fly through the air

Winding from side to side keeps flying snakes stay stable and helps them to glide further. Watch how researchers used motion-capture technology to study snake gliding in precise detail in this video from Nature.

Nature | 4 min video
Reference: Nature paper

How flatworms regrow their eyes

Flatworms have uncanny regenerating abilities: they can regrow into a whole organism from a body piece as small as one-279th of the original size. Researchers now have shown that specialized cells hidden throughout the body act as guides for regeneration. When the flatworm Schmidtea mediterranea is growing new eyes, the cells help eye neurons to grow connections to the brain. Similar guidepost cells have an important role in embryo development in many animals, says biologist Peter Reddien, but are absent in typical adult organisms.

New York Times | 3 min read
Reference: Science paper

Democrats offer ambitious climate plan

A Democrat-led US government committee charged with coming up with a detailed climate plan has released its recommendations for saving the world. One of the report’s overall targets is net-zero carbon-dioxide emissions in the United States before 2050. To get there, the report offers 12 ‘pillars’, including investing in green-technology industries and strengthening support for climate-science research. “I am very heartened to see the detail and ambition that the committee has put forward,” says energy-policy researcher Leah Stokes, who kindly broke down the 500+-page report in a Twitter thread. How much of the plan will be implemented comes down to the outcome of the imminent US elections in November.

Vox | 10 min read
Reference: Solving the Climate Crisis report (or just the 2-page summary)

COVID-19 coronavirus update

()

The thorny problem of herd immunity

The concept of ‘herd immunity’ is fairly simple. When enough people are immune to COVID-19 — whether by vaccination or by having survived infection — the spread starts to slow because there are not enough people to infect. But how many need to be immune before that happens? It’s a tricky question, especially when the protection is acquired naturally, rather than by immunization. People are physically different in their susceptibility to infection. And where you live, and your living conditions, make a difference, too. The threshold could be much higher in densely packed cities — and the hardest-hit places in the world might already be close to reaching it. Quanta | 8 min read

Notable quotable

“What was thought to be unimaginable turns out to be the reality we’re facing right now.”

The United States, which has struggled to contain its COVID-19 outbreak, is on a path to recording 100,000 new cases per day, says physician Anthony Fauci, the director of the US National Institute of Allergy and Infectious Diseases and the face of the country’s pandemic response. (STAT | 4 min read)

Features & opinion

A simple, measurable goal for biodiversity?

Last month, a team of researchers proposed creating one headline number to measure how well we are protecting biodiversity. They suggested that countries should aim to keep extinctions to “well below” 20 known species worldwide every year. The idea deserves serious consideration and thorough assessment, argues a Nature editorial.

Nature | 5 min read

How digital cameras changed us

The totality of humankind is expected to take more than 1.4 trillion photographs in 2020 — the vast majority of those through mobile phones, and almost all of them digital. The technology has come a long way since 1974, when a young engineer named Steven Sasson “MacGyvered” the first prototype digital camera: a 100-by-100-pixel, toaster-size device that recorded images on a cassette tape. Digital images have become so crucial to scholars’ work that some are starting to wonder whether they should get formal training in digital photography, writes historian Allison Marsh. “Today, people aren’t just watching history. They’re recording it and sharing it in real time.”

IEEE Spectrum | 8 min read

News & views

LIGO overcomes quantum limit

The Laser Interferometer Gravitational-wave Observatory (LIGO) works by continuously monitoring the distance between mirrors that face each other and are several kilometres apart. Its detectors bounce lasers between the mirrors to sense changes in that distance on the order of one part in 1022. The quest to improve LIGO’s sensitivity has hit a wall owing to the law of quantum uncertainty, which says that the position and momentum of an object cannot both be measured to arbitrary precision. To beat that limit, physicists at LIGO and at its sister observatory Virgo have recently tweaked their lasers to introduce quantum correlations between the positions of the mirrors and the laser light. Now, LIGO physicists have demonstrated that their 40-kilogram mirrors do indeed act as quantum objects. “This is remarkable, because such fluctuations occur at size scales that are comparable to the dimensions of elementary particles,” write physicists Valeria Sequino and Mateusz Bawaj.

Nature | 7 min read
Reference: Nature paper

Quote of the day

“Those self-critical, self-correcting principles of science simply don’t allow for hero-worship.”

The controversial COVID-19 research done by physician John Ioannidis, who has been a high-profile critic of bad science, shows that even the strongest critics of science need themselves to be criticised, argues psychologist Stuart Ritchie. (Unherd | 10 min read)

Today I’m chilling out with this 10-year time-lapse of the Sun, made from images taken by NASA’s Solar Dynamics Observatory. It’s well worth turning on your sound for the soundtrack by musician Lars Leonhard.

Thank you to everyone who sent me their mouth-watering family recipes yesterday. Reader Paul Guinnessy pointed me at the recipe-packed blog of food historian Joyce White. My pick is this Good Cake, which feeds 40 people (despite being just one-fourth of the original seventeenth-century recipe)!

While I cut myself another slice, why not let me know what you think about this newsletter? Please send your feedback to briefing@nature.com.

Flora Graham, senior editor, Nature Briefing
With contributions by Davide Castelvecchi

nature
Join our community twitter Facebook

You received this newsletter because you subscribed with the email address: -

Enjoying this newsletter? Please recommend it to a friend or colleague. Use this form to recommend it and be entered to win a Nature 150th anniversary tote bag filled with Nature goodies.
Had enough? Unsubscribe from the Nature Briefing.
Fancy a bit of a read? View our privacy policy.
Forwarded by a friend? Get the Briefing straight to your inbox: subscribe for free.

Nature | The Springer Nature Campus, 4 Crinan Street, London, N1 9XW, United Kingdom

Nature Research, part of Springer Nature.
© 2020 Springer Nature Limited. All rights reserved.

Other emails from Nature Journal

Nature Journal
Aug 13, 2020
A mysterious mismatch between coronavirus infections and serious disease in Africa
Nature Journal
Aug 12, 2020
Broken cable smashes main dish at the iconic Arecibo Observatory
Nature Journal
Aug 11, 2020
Russia’s fast-track coronavirus vaccine draws outrage over safety
Nature Journal
Aug 10, 2020
The physics of the tragic explosion in Beirut
Nature Journal
Aug 7, 2020
The wildly complicated immune response to COVID-19
Nature Journal
Aug 6, 2020
Last of their kind, the tuatara genome reveals why this reptile is so remarkable