A Paper Published This Week Confirmed A Piece Of Speculation Going All The Way Back To Darwin.

AI-controlled brain implants for mood disorders tested in people 

Brain implants that deliver electrical pulses tuned to a person’s feelings and behaviour are being tested in people for the first time. Two teams funded by the US military’s research arm, the Defense Advanced Research Projects Agency (DARPA), have begun preliminary trials of ‘closed-loop’ brain implants that use algorithms to detect patterns associated with mood disorders. These devices can shock the brain back to a healthy state without input from a physician.

The work, presented last week at the Society for Neuroscience (SfN) meeting in Washington DC, could eventually provide a way to treat severe mental illnesses that resist current therapies. It also raises thorny ethical concerns, not least because the technique could give researchers a degree of access to a person’s inner feelings in real time.

The general approach — using a brain implant to deliver electric pulses that alter neural activity — is known as deep-brain stimulation. It is used to treat movement disorders such as Parkinson’s disease, but has been less successful when tested against mood disorders. Early evidence suggested that constant stimulation of certain brain regions could ease chronic depression, but a major study involving 90 people with depression found no improvement after a year of treatment.1

The scientists behind the DARPA-funded projects say that their work might succeed where earlier attempts failed, because they have designed their brain implants specifically to treat mental illness — and to switch on only when needed. “We’ve learned a lot about the limitations of our current technology,” says Edward Chang, a neuroscientist at the University of California, San Francisco (UCSF), who is leading one of the projects.

Holtzheimer, P.E., et al. Lancet Psychiatry. 4(11):839–849. (2017)

The world mocks… as it should.

‘Tobacco at a cancer summit’: Trump coal push savaged at climate conference

The Trump team was heckled and interrupted by a protest song at the UN’s climate change summit in Bonn on Monday after using its only official appearance to say fossil fuels were vital to reducing poverty around the world and to saving jobs in the US.

While Donald Trump’s special adviser on energy and environment, David Banks, said cutting emissions was a US priority, “energy security, economic prosperity are higher priorities”, he said. “The president has a responsibility to protect jobs and industry across the country.”

Other attendees at the summit condemned the argument.

“Promoting coal at a climate summit is like promoting tobacco at a cancer summit,” said Michael Bloomberg, the former New York mayor and a UN special envoy for cities and climate change.

White House officials and business leaders appear at the event, titled The Role of Cleaner and More Efficient Fossil Fuels and Nuclear Power in Climate Mitigation. Photograph: Ronald Wittek/EPA 

Coral reefs, bays, and Inlets, Flores Island, Indonesia

Biologists create beetle with functional extra eye

On “Game of Thrones,” a three-eyed raven holds the secrets of the past, present and future in a vast fantasy kingdom. But for real-world biologists, a “three-eyed beetle” may offer a true glimpse into the future of studying evolutionary development.

Using a simple genetic tool, IU scientists have intentionally grown a fully functional extra eye in the center of the forehead of the common beetle. Unraveling the biological mechanisms behind this occurrence could help researchers understand how evolution draws upon pre-existing developmental and genetic “building blocks” to create novel complex traits, or “old” traits in novel places.

The study’s results appear in the journal of the Proceedings of the National Academy of Sciences. The work also provides deeper insights into an earlier experiment that accidentally produced an extra eye as part of a study to understand how the insect head develops.

“Developmental biology is beautifully complex in part because there’s no single gene for an eye, a brain, a butterfly’s wing or a turtle’s shell,” said Armin P. Moczek, a professor in the IU Bloomington College of Arts and Sciences’ Department of Biology. “Instead, thousands of individual genes and dozens of developmental processes come together to enable the formation of each of these traits.

Eduardo E. Zattara, Anna L. M. Macagno, Hannah A. Busey, Armin P. Moczek. Development of functional ectopic compound eyes in scarabaeid beetles by knockdown oforthodenticle. Proceedings of the National Academy of Sciences, 2017; 114 (45): 12021 DOI: 10.1073/pnas.1714895114

The creation of three-eyed beetles through a new technique developed at IU provides scientists a new way to investigate the genetic mechanisms responsible for the evolutionary emergence of new physical traits.Credit: Photo by Eduardo Zattara

How To Fall Asleep And Why We Need More 

The National Sleep Foundation recommends an average of eight hours of sleep per night for adults, but sleep scientist Matthew Walker says that too many people are falling short of the mark.

“Human beings are the only species that deliberately deprive themselves of sleep for no apparent gain,” Walker says. “Many people walk through their lives in an underslept state, not realizing it.”

Walker is the director of the Center for Human Sleep Science at the University of California, Berkeley. He points out that lack of sleep — defined as six hours or fewer — can have serious consequences. Sleep deficiency is associated with problems in concentration, memory and the immune system, and may even shorten life span.

BOMBTURBATION

Yes, it’s your new word for the day and a real phenomenon studied by today’s geoscientists – bombturbation.

Essentially, it reflects the change in a geomorphologic surface due to bombing. Whether by cannon balls or A-bombs, whenever the surface of the Earth is blown up, there is a tendency to create craters. Bombturbation was initially applied to the disturbance of soil due to warfare (Hupy and others 2006): a bomb or some sort of artillery explosion excavates a crater, ejecting soils out into a surrounding rim of mixed material. Bombing can have the effect of creating entirely new geomorphological environments as seen in photos of Omaha Beach (#37 at http://tinyurl.com/nyhdu8), US Civil War Battlefields (http://tinyurl.com/kamaebd), or as in the present photo, the Nevada nuclear test site.

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2,000-Year-Old Killer Whale Geoglyph Found in Peru Desert

Archaeologists rediscovered a giant geoglyph of a killer whale, etched into a desert hillside in the remote Palpa region of southern Peru, after it had been lost to science for more than 50 years.

The 230-foot-long (70 meters) figure of an orca — considered a powerful, semimythical creature in ancient Peruvian lore — may be more than 2,000 years old, according to the researchers.

They said it may be one the oldest geoglyphs in the Palpa region, and older than those in the nearby Nazca region, which is famous for its vast collection of ancient ground markings — the Nazca Lines — that include animal figures, straight lines and geometrical shapes.

Archaeologist Johny Isla, the head of Peru’s Ministry of Culture in Ica province, which includes the Palpa and Nazca valleys, explained that he saw a single photograph of the orca pattern for the first time about four years ago. He’d seen it while researching studies of geoglyphs at the German Archaeological Institute in Bonn. Read more.

The World’s Parasites Are Going Extinct. Here’s Why That’s a Bad Thing

A parasite, in essence, is any organism that makes its living off another organism (think bed bugs, leeches, vampire fish and even mistletoe). These freeloaders have been rather successful: up to half of Earth’s 7.7 million known species are parasitic, and this lifestyle has evolved independently hundreds of times. But in a study published this week in the journal Science Advances, researchers warn that climate change could drive up to one-third of Earth’s parasite species to extinction by the year 2070.

Tapeworms, like this one imaged using a scanning electron micrograph, weaken their victims but don’t typically kill them. (Mediscan / Alamy)