Alzheimer’s disease is characterized by a slow yet steady progression of memory loss. It often begins with simple omissions like forgetting a name before eventually robbing its host of the ability to perform basic tasks such as getting dressed. But how, exactly, does this progression unfold? Medical professionals often break down the disorder into the following stages: 1. Preclinical Stage This phase can last up to 20 years before the person even has any signs of disease — yet misbehaving pr ...read more

In two decades as a pediatrician, Jason Reynolds has had no success treating patients with opioid use disorder by sending them to rehab. But five years ago, when his Massachusetts practice, Wareham Pediatric Associates PC, became the first in the state to offer medication therapy to adolescent patients, he saw dramatic results.The first patient he treated with medication, a young man named Nate, had overdosed on opioids twice in the 24-hour period before seeing Reynolds. But that patient has had ...read more

Ever since neutron stars were discovered, researchers have been using their unusual properties to probe our universe. The superdense remnants of stellar explosions, neutron stars pack a mass greater than the Sun’s into a ball about as wide as San Francisco. A single cup of this star matter would weigh about as much as Mount Everest.These odd celestial bodies could alert us to distant disturbances in the fabric of spacetime, teach us about the formation of elements, and unlock the secrets of ho ...read more

The American pronghorn is a hoofed mammal native to North America. It's not an antelope, and it's not a sheep, although it has traditionally been called both. Rather, the pronghorn is an even-toed ungulate that can run faster than most any animal on Earth, with the exception of the African cheetah. Clocking in at 61 miles per hour, the pronghorn can run faster than any predator that lives in its habitat, and it has extreme endurance, keeping up that pace for long periods of time. So it begs to ...read more

The headlines about global warming have been hard to miss. First we had the unofficial hottest day on record, then a string of unofficial hottest days in a row, followed by the unofficial hottest week.But here at ImaGeo, I chose to wait for NOAA and NASA to come out with their regular independent monthly analyses of the global climate. I explain why below, but first, the news:Both agencies have found that last month obliterated the record for warmest June globally. In both NOAA's and NASA's reco ...read more

This article was originally published on Oct. 31, 2021 and has since been updated with new information on wet-bulb temperatures. For thousands of years, Earth has been good to us. The planet has cooperated with our physiology (or, rather, natural selection has shaped our physiology to fit a wide variety of climates) and allowed us to survive just about anywhere we please. But its generosity is winding down. As we careen toward temperatures that neither we nor any of our ancestors have encountere ...read more

Dinosaurs roamed for thousands of years on Earth. They thrived in various environments, so they must have had some pretty good strategies for keeping offspring alive and ensuring the species' survival. Learning about what these techniques might be hasn't been easy for paleontologists, who've primarily worked with scarce, fragmented fossil evidence. The main theory is that just like living animals exhibit a variety of behaviors from species to species, it's likely that dinosaurs also were variab ...read more

The costly tuberculosis (TB) drug bedaquiline, a lifesaver in more difficult cases, will be available in generic form to many low- and middle-income countries around the world, under a surprise agreement announced July 13, 2023. The accord was negotiated quietly between Johnson & Johnson and international group Stop TB Partnership, which provides TB drugs to lower income countries around the world.Activists such as Doctors Without Borders and The Fault in Our Stars author John Green, who led ...read more

Some 125 million years ago, dinosaurs like Iguanodon and Polacanthus walked the floodplains of the Isle of Wight, a quaint island off the southwestern corner of England.In fact, so many of these giants roamed there — or the conditions for preservation were so good — that the island now holds one of the richest deposits of dinosaur fossils in all of Europe, with parts of more than 20 species dating to the early Cretaceous period.Some of these, like the Iguanodon, were among the first dinosaur ...read more

Assuming human beings don’t wipe themselves out in the coming decades, and technology continues to develop at current rates, our species just might eventually expand into other parts of the solar system.After all, NASA has plans to build a permanent moon base, and steps are being taken to send crewed spacecrafts to Mars. Should we get there, humans must grapple with various potential methods of survival as a space-faring civilization.Two general schools of thought have emerged, each with a vas ...read more