science

Paleontologists have discovered a three-eyed creature with a pencil sharpener-like mouth that roamed the sea for prey more than 500 million years ago.

The fossilized remains of one Mosura fentoni — nicknamed the "sea moth" — were found in the Burgess Shale of Canadian Rockies, presenting researchers with new insight into animal life in the Cambrian period, according to a paper published this week in the journal Royal Society Open Science.

The predator was about the length of an index finger, with three eyes dotting its head and a circular mouth lined with teeth, according to paleontologists at the Manitoba Museum and Royal Ontario Museum who made the discovery. The beast was also equipped with flaps on both sides of its body for swimming, and had intimidating claws extending from its head.

By well-known mathematical physicist John C. Baez. This refutes the article that floated around a few days ago saying the universe would end sooner than expected. That article was based on the premise that dead stars (big chunks of matter that aren't black holes) emit Hawking radiation the way that black holes do, and that the matter in the universe would eventually decay through this mechanism. The linked blog post says that the premised is wrong, and matter in normal space doesn't give off Hawking radiation. I guess in 10^74^ years (iirc) we will find out who was right!

Engineers at NASA say they have successfully revived thrusters aboard Voyager 1, the farthest spacecraft from our planet, in the nick of time before a planned communications blackout.

A side effect of upgrades to an Earth-based antenna that sends commands to Voyager 1 and its twin, Voyager 2, the communications pause could have occurred when the probe faced a critical issue — thruster failure — leaving the space agency without a way to save the historic mission. The new fix to the vehicle’s original roll thrusters, out of action since 2004, could help keep the veteran spacecraft operating until it’s able to contact home again next year.

Voyager 1, launched in September 1977, uses more than one set of thrusters to function properly. Primary thrusters carefully orient the spacecraft so it can keep its antenna pointed at Earth. This ensures that the probe can send back data it collects from its unique perspective 15.5 billion miles (25 billion kilometers) away in interstellar space, as well as receive commands sent by the Voyager team.

Doctors in the US have become the first to treat a baby with a customised gene-editing therapy after diagnosing the child with a severe genetic disorder that kills about half of those affected in early infancy.

KJ was born with severe CPS1 deficiency, a condition that affects only one in 1.3 million people. Those affected lack a liver enzyme that converts ammonia, from the natural breakdown of proteins in the body, into urea so it can be excreted in urine. This causes a build-up of ammonia that can damage the liver and other organs, such as the brain.

Writing in the New England Journal of Medicine, the doctors described the painstaking process of identifying the specific mutations behind KJ’s disorder, designing a gene-editing therapy to correct them, and testing the treatment and fatty nanoparticles needed to carry it into the liver. The therapy uses a powerful procedure called base editing which can rewrite the DNA code one letter at a time.

Impact simulator

https://neal.fun/asteroid-launcher/

cross-posted from: https://lemmy.ca/post/44112210

This is the first (and currently only) known instance of a fault line motion being captured on camera.

A new study found middle-aged Americans demonstrated higher levels of loneliness than older adults.

With coral reefs in crisis due to climate change, scientists have engineered a bio-ink that could help promote coral larvae settlement and restore these underwater ecosystems before it's too late. In a paper publishing May 14 in the Cell Press journal Trends in Biotechnology, researchers demonstrate that the ink could boost coral settlement by more than 20 times, which they hope could contribute to rebuilding coral reefs around the world.

Although the theory is promising, the duo point out that they have not yet completed its proof. The theory uses a technical procedure known as renormalization, a mathematical way of dealing with infinities that show up in the calculations.

So far Partanen and Tulkki have shown that this works up to a certain point—for so-called 'first order' terms—but they need to make sure the infinities can be eliminated throughout the entire calculation.

"If renormalization doesn't work for higher order terms, you'll get infinite results. So it's vital to show that this renormalization continues to work," explains Tulkki. "We still have to make a complete proof, but we believe it's very likely we'll succeed."

The National Oceanic and Atmospheric Administration will no longer track the cost of climate change-fueled weather disasters, including floods, heat waves, wildfires and more. It is the latest example of changes to the agency and the Trump administration limiting federal government resources on climate change.

NOAA falls under the U.S. Department of Commerce and is tasked with daily weather forecasts, severe storm warnings and climate monitoring. It is also parent to the National Weather Service.

The agency said its National Centers for Environmental Information would no longer update its Billion-Dollar Weather and Climate Disasters database beyond 2024, and that its information — going as far back as 1980 — would be archived.

Study finds human-caused climate change made four-day rainfall across central Mississippi valley 40% more likely

The four-day historic storm that caused death and destruction across the central Mississippi valley in early April was made significantly more likely and more severe by burning fossil fuels, rapid analysis by a coalition of leading climate scientists has found.

Record quantities of rain were dumped across eight southern and midwestern states between 3 and 6 April, causing widespread catastrophic flooding that killed at least 15 people, inundated crops, wrecked homes, swept away vehicles and caused power outages for hundreds of thousands of households.

The floods were caused by rainfall made about 9% more intense and 40% more likely by human-caused climate change, the World Weather Attribution (WWA) study found. Uncertainty in models means the role of the climate crisis was probably even higher.