Thousands of Reddit forums are going dark Monday in one of the largest user-driven protests ever to hit the social media platform.

REDWOOD CITY, Calif.--(BUSINESS WIRE)--Aug 22, 2023--

Nasa scientists have found a planet they believe is covered by active volcanoes. In a study published in the journal Nature, scientists said they found the planet, which is the size of Earth about 90 light-years from Earth in the Crater constellation. They called it LP 791-18 d and one part is constantly scorched by sunlight, while the other is always in darkness. “The day side would probably be too hot for liquid water to exist on the surface. But the amount of volcanic activity we suspect occurs all over the planet could sustain an atmosphere, which may allow water to condense on the night side,” Björn Benneke, one of the astronomers who studied the planet, told NASA’s Jet Propulsion Laboratory. Sign up to our free Indy100 weekly newsletter The LP 791-18 system contains at least two other planets, called LP 791-18 b and c. The latter is two-and-a-half times larger than Earth and more than seven times its mass. It also affects the orbit of LP 791-18 d, making it travel along an elliptical path around the system’s sun. That path means LP 791-18 d is deformed every time it completes an orbit. “These deformations can create enough internal friction to substantially heat the planet’s interior and produce volcanic activity at its surface,” according to NASA. “A big question in astrobiology, the field that broadly studies the origins of life on Earth and beyond, is if tectonic or volcanic activity is necessary for life,” study co-author Jessie Christiansen said. “In addition to potentially providing an atmosphere, these processes could churn up materials that would otherwise sink down and get trapped in the crust, including those we think are important for life, like carbon.” Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

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We all crave a bit of peace and quiet every now and then; just some time to be alone with our thoughts. But silence isn’t as golden as we’ve been led to believe, according to the people who’ve been to the quietest place on Earth. You might expect this to be in a remote part of some great desert whereas, in actual fact, it’s located in a research lab in Minnesota. Inside the anechoic chamber at Orfield Laboratories, it is so silent you can hear your own blood flowing and bones moving. Sign up for our free Indy100 weekly newsletter Made of 3.3ft-thick fibreglass acoustic wedges and double walls of insulated steel and thick concrete, the room absorbs 99.99 per cent of sound. The conditions within its Fort Knox-style walls are so intense that the longest amount of time anyone’s been able to endure in there is 45 minutes. “We challenge people to sit in the chamber in the dark,” the lab’s founder Steven Orfield told Hearing Aid Know. “When it’s quiet, ears will adapt. The quieter the room, the more things you hear. You’ll hear your heart beating, sometimes you can hear your lungs, hear your stomach gurgling loudly. “In the anechoic chamber, you become the sound." What he means by this is that, with the absence of external noise, your ears are forced to adapt to unimaginable silence and start to focus inwards on your own mind and bodily functions. Furthermore, after as little as 30 minutes subjects begin to hallucinate. Orfield explained that it is also impossible to stay in the room for more than half an hour without sitting down because a person’s orientation is largely grounded in the sounds they make when moving. "How you orient yourself is through sounds you hear when you walk," he told the Daily Mail. In the anechoic chamber, you don't have any cues. "You take away the perceptual cues that allow you to balance and manoeuvre. If you're in there for half an hour, you have to be in a chair." The Quietest Place on Earth: Orfield Laboratories youtu.be For anyone who reckons they could top that 45-minute record, it is possible to experience the chamber for yourself. The Laboratories offer a tour, named “The Anechoic Experience”, which enables participants to take on the challenge, provided they’re willing to fork out a cool $600 (around £470) per hour for the privilege. The Orfield website states: “We have witnessed many seeming miracles, some of which have explanations and some of which remain mysteries, as a result of time spent in our anechoic chamber. “We remain curious about the nature of the chamber's impact on all people, its therapeutic properties, and how it can influence human perception. While anechoic chambers are traditionally used to study products, ours is becoming also about the people. “The Anechoic Experience is designed to be an opportunity to personally inquire about the chamber's therapeutic and spiritual effects.” We reckon we might be better off just lying in bed with the duvet over our heads next time we want a moment's peace. Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

The floor of Crawford Lake in Ontario acts like a storybook, preserving Earth’s recent history in chronological order. Crawford Lake reveals the activities of local Iroquoian communities from the late 13th to 15th centuries, all the way through to the present day. This is because Crawford Lake is a meromictic lake, meaning that the dense bottom layer of water does not mix with the less dense upper layers. “The isolated bottom layer of water remains under disturbed, enabling the accumulation of clearly laminated valves which record precise information about the time during which they were deposited,” according to the Anthropocene Working Group. Experts have nominated Crawford Lake as representation for the start of the Anthropocene epoch, a proposed new geological era characterised by significant changes to the planet’s surface as a result of human behaviour. The Anthropocene is yet to be officially accepted as a unit of geologic time, but in 2016 a working group under the guidance of an International Commission on Stratigraphy subcommittee agreed that human behaviour has left scars so deep that they will remain evident even into the distant future. Sign up to our free Indy100 weekly newsletter One of the most notable markers of the Anthropocene is the appearance of plutonium, a radioactive material that appeared in the mid-20th century as a result of hydrogen bomb tests. “The presence of plutonium gives us a stark indicator of when humanity became such a dominant force that it could leave a unique global ‘fingerprint’ on our planet,” explained Professor Andrew Cundy, Chair in Environmental Radiochemistry at the University of Southampton and member of the Anthropocene Working Group. “In nature, plutonium is only present in trace amounts. But in the early-1950s, when the first hydrogen bomb tests took place, we see an unprecedented increase and then spike in the levels of plutonium in core samples from around the world. We then see a decline in plutonium from the mid-1960s onwards when the Nuclear Test-Ban Treaty came into effect.” Agreeing on a simple measure that defines the boundary between chapters in Earth’s history is just the first step. This measure requires agreement among scientists on a single location to define the boundaries. Known as the Global Boundary Stratotype Section and Point, or a golden spike, plays a crucial role in standardising these borders between epochs. The Anthropocene Working Group has been evaluating potential golden spike sites, from Oued Akrech, Morocco, to Alano di Piave, Italy. After spending three years assessing the qualities of a dozen potential golden spikes for the Anthropocene, finally the AGW has landed on Crawford Lake. “Crawford Lake is so special because it allows us to see at annual resolution the changes in Earth history throughout two separate periods of human impact on this small lake,” micropalaeontologist Francine McCarthy of Brock University in Canada, a voting member of the AGW, said at a press briefing. The lake’s unique properties, such as its small size, depth, and lack of water mixing create sediments that precisely record environmental changes over the past millennia. To officially establish the Anthropocene in the International Chronostratigraphic Chart, the golden spike at Crawford Lake must undergo a series of voting by various commissions and unions. If successful, it will mark the moment when human activities permanently altered the planet. Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

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