1.4-million-year-old footprints, and a snake painted 20 feet long

Lead author Kevin Hatala measured some of the footprints at up to 1.8 meters tall and around 75 kilograms, human-like dimensions for a species mostly known from skulls with enormous jaws and teeth. Bones accumulate over centuries; footprints capture a single afternoon. That is what makes this trace so rare: not a skeleton, but a snapshot of eight adults occupying one patch of shoreline at the same moment, which is about as close as paleontology gets to catching a species mid-conversation.

Disease activity dropped in every one of the six, and by the end of the observation period three no longer needed any rheumatoid arthritis medication at all. Prof. David Simon's team suspects the culprit was a population of memory B cells hiding in lymph nodes, bone marrow, and joint tissue, quietly reigniting inflammation for years after the original trigger had passed. The CAR T cells hunted those cells down and cleared them, giving the immune system something like a fresh start.

Four of the women, daughters and sisters of pharaoh Amenemhat II, were buried with bows, arrows, and in Princess Ita's case an especially ornate dagger, objects usually filed as male grave goods. Dr. Zeinab Hashesh's team found that the bone development in these women's arms and shoulders matches the muscle-loading pattern of people who actually drew bows and threw weapons for years, not people who were handed a prop for the afterlife. Princess Ita died between 28 and, per the study, showed exactly this kind of skeletal wear.

Roman carries a 300-megapixel infrared camera with a field of view more than 100 times wider than Hubble's, wide enough, says senior project scientist Julie McEnery, to "find the weird, the rare and the unusual." It joins Euclid and the Vera Rubin Observatory to form a trio of sky-mapping instruments meant to reconstruct how the universe's expansion has changed over billions of years, and along the way it is projected to spot thousands of supernovae and tens of thousands of planets 1822.

A 2020 Mayo Clinic study of 2,728 adults undergoing vascular testing found that people with impaired calf pump function had a 10-year mortality rate of about 18 percent, compared with roughly 6 percent for people whose pumps worked normally. A larger 2024 follow-up of nearly 6,000 patients found the same pattern: the less blood the calf pump moved during activity, the higher the risk of death, with the weakest pumpers facing more than double the risk of the strongest.

Working since 2018 with senior Amurdak Traditional Owner Charlie Mungulda, Taçon's team has now cataloged 165 rock art sites and found 29 Rainbow Serpent images across 21 of them, the densest concentration known anywhere, alongside a giant human figure, Australia's only known painting of a baleen whale, and a 124-meter stone arrangement shaped like a serpent's winding body. The team's new study argues these outsized images cluster in the 19th and 20th centuries, precisely as European colonization began upending the world the painters knew.