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Blood vessels grown in the lab in just five days could quickly prevent the tissue damage that can occur after an accident

Despite Earth’s most devastating mass extinction wiping out over 80% of marine life and half of land species, a group of early reptiles called archosauromorphs not only survived but thrived, venturing across the supposedly lifeless tropics to eventually evolve into the dinosaurs and crocodiles we know today. Armed with a groundbreaking model dubbed TARDIS, researchers have reconstructed their ancient dispersal routes, revealing how these resilient reptiles conquered a hostile, post-apocalyptic Earth.

Teens might finally have a good reason to sleep in on weekends within limits. A new study reveals that teenagers who get up to two extra hours of sleep on weekends show fewer anxiety symptoms than those who don t. But go beyond that sweet spot, and symptoms can actually increase.

Researchers at Johns Hopkins found that fragments of tumor DNA can appear in the bloodstream up to three years before a cancer diagnosis, offering a potentially revolutionary window for early detection and treatment.

Scientists have uncovered how exercise directly influences brain health in Alzheimer’s disease by pinpointing the exact brain cells affected. Using cutting-edge RNA sequencing and mouse models, researchers identified changes in specific cells like microglia and a novel type of astrocyte after exercise.

Where do microplastics really go after entering the environment? MIT researchers discovered that sticky biofilms naturally produced by bacteria play a surprising role in preventing microplastics from accumulating in riverbeds. Instead of trapping the particles, these biofilms actually keep them loose and exposed, making them easier for flowing water to carry away. This insight could help target cleanup efforts more effectively and identify hidden pollution hotspots.

Scientists have uncovered a previously unknown type of molecular motion inside DNA-based droplets: instead of spreading randomly, guest molecules advance in an organized wave. This surprising discovery opens the door to understanding how cells might organize internal processes without membranes. Using customizable DNA condensates as experimental models, the team showed how molecular waves emerge through precise DNA interactions. These insights could not only transform our grasp of cellular signaling but may even lay groundwork for treating neurodegenerative diseases by influencing how molecules behave inside aging cells.

Surveying nearby galaxies in the process of merging with other galaxies, astronomers have identified massive, dense star factories, unlike any found in the Milky Way. The findings provide a rare glimpse into processes shaping galaxies in the very early universe and possibly the Milky Way a few billion years from now.

Tufts University scientists are aiming to revolutionize the future of weight loss drugs by engineering a new compound that targets four gut hormones instead of the usual one to three. These next-gen tetra-functional peptides may overcome the limitations of current drugs like Ozempic and Mounjaro especially their nausea, muscle loss, and rebound weight gain.

A team at UC Davis has made a major leap in neurotechnology, enabling a man with ALS to speak again through a brain-computer interface that converts thoughts into speech in real time. Unlike prior systems that translated neural signals into text, this one synthesizes actual voice with tone, pacing, and even melody, creating a near-conversational experience. The device interprets neural signals via implants and advanced AI, making it possible for users to speak new words, ask questions, and express emotions vocally. Though still early-stage, this breakthrough offers real hope for those silenced by neurological conditions.