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A group of scientists have discovered 280-million-year-old fossil tracks in a remote area of the Grand Canyon that predate the the appearance of the earliest dinosaurs, according to a press release from the Grand Canyon National Park. According to the press release, an international team of paleontologists discovered "extremely well-preserved trackways of primitive tetrapods (four-footed animals) which inhabited an ancient desert environment."Paleontologists recognized the fossil tracks and say they were produced by a "long-extinct relative of very early reptiles... of extinct tetrapods known as diadectomorphs, a primitive group that possessed characteristics of both amphibians and reptiles."The characteristics of the newly discovered tracks suggest the creature that made the prints walked on all four legs, with each foot containing five "clawless digits.""Although the actual track maker for the Grand Canyon footprints may never be known, the Grand Canyon trackways preserve the travel of a very early terrestrial vertebrate," the press release stated. 1079

#FAA Statement on the Cessna 414 incident on Berkley Avenue in #Colonia, #NewJersey. We will provide updates as they become available. pic.twitter.com/pUpyZuGWDP— The FAA (@FAANews) October 29, 2019 210

A draft confidential memo from the Internal Revenue Service last fall determined that tax returns must be surrendered to Congress unless the president opts to invoke executive privilege, 199

A man died when he was crushed by an elevator inside a Manhattan building Thursday morning.The 30-year-old man was on an elevator with two people inside the Manhattan Promenade on Third Avenue in Kips Bay around 8:45 a.m., sources say. When he got off, the man fell through a gap, and became lodged between the elevator door and the elevator shaft. The elevator then crushed him, sources said.The Manhattan Promenade is a mixed-use commercial and residential building.The victim's identity was not immediately released.It was not immediately clear if there were any violations or issues with the elevator. The building had been recently fined for unsafe elevator conditions, the NY Times reported.In a statement, the Department of Buildings said they are investigating the incident.“The Department of Buildings is investigating this incident aggressively and will take all appropriate enforcement actions. Elevators are the safest form of travel in New York, due to the city’s stringent inspection and safety requirements. We’re determined to find out what went wrong at this building and seek ways to prevent incidents like this in the future.”The Medical Examiner is at the scene. 1194

Tattoos have been around for thousands of years, primarily as an artform. But what if they had a purpose, beyond just aesthetics? “I think that we can upgrade tattoo inks to give people new abilities,” says Carson Bruns, a mechanical engineer professor at the University of Colorado. Bruns is also a tattoo aficionado. "I got my first tattoo when I was 19 years old, and I’ve been addicted to tattoos ever since," Bruns says.He spends his days in a lab, working to bring an ancient artform into the 21st Century. "My idea is that, by adding new function, new properties to the tattoo inks, that tattoos could potentially be used for more than just art," he says. Bruns is focused on a specific type of tattoo ink, one that would embed tiny microcapsules filled with certain material underneath the skin. One of his most promising developments would fill those capsules with UV dye. It’d essentially be a tattoo that tells you when you need to apply sunscreen. "So our tattoo, anytime you can see it, anytime it's visible to you, that's a sign your skin is dangerously exposed to UV light and its increasing your risk to skin cancer,” Bruns explains. Other types of inks would be heat-sensitive, like the squares he's tested on his own skin. Those would only appear when your body reached a certain temperature. "A tattooable thermometer, made of these heat sensitive tattoo inks could be a way to make it more accessible for people to read their body temp and check up on their own health," he says. Bruns says the possibilities are endless. "I like to joke tattoos can give you superpowers,” he says. “They can give our skin new properties we don't currently have."Bruns hopes that one day, we might even be able to come up with tattoo inks that could conduct electricity or even tell us our blood sugar or blood alcohol levels. 1843