SciTechDaily.com Newsletter

"New fossil study challenges the classic story of human evolution."

Views expressed in this science and technology update are those of the reporters and correspondents.  Accessed on 17 July 2026, 1743 UTC.

Content and Source:  "SciTechDaily.com Newsletter."

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Russ Roberts (https://hawaiisciencemonitor.blogspot.com).

SciTechDaily Newsletter

The latest science, space, and technology news.

New Fossil Study Challenges the Classic Story of Human Evolution   2026-07-17 11:51:25 +00:00 Scientists say some of the traits that define modern humans may have evolved only after long-standing biological and cultural barriers were broken. Human evolution is often presented as a clear progression: brains grew larger, faces became smaller, tools improved, and our ancestors gradually became more like us. A new study suggests that this familiar story [...] Read more...   The Surprising Chocolate Trick That Could Boost Your Gym Performance   2026-07-17 11:16:12 +00:00 Researchers found that smelling chocolate before and during resistance exercise may subtly change how the brain responds to effort and appetite. Halfway through a difficult leg workout, most people would not expect the smell of chocolate to help them complete more repetitions. Yet a study published in Frontiers in Physiology suggests that exposure to dark [...] Read more...   6 Simple Scent Games That Can Make Your Dog Happier   2026-07-17 10:41:30 +00:00 A dog’s nose is a gateway to a richer world, and scent-filled walks, games, and food hunts can transform boredom and stress into excitement, focus, and discovery. While we are captivated by a vivid sunset and breathtaking views, dogs have their noses to the ground, reading the odor stories left behind by other dogs and [...] Read more...   Common Mouth Bacteria May Trigger Dangerous Calcium Buildup in the Heart   2026-07-17 00:51:37 +00:00 A gum disease bacterium may contribute to aortic valve calcification through inflammation, according to preliminary human tissue and mouse research. A bacterium best known for damaging gums may also be involved in the hardening of the heart’s aortic valve. Preliminary research presented at the American Heart Association’s Basic Cardiovascular Sciences Scientific Sessions 2026 points to [...] Read more...   New CRISPR Tool Gives Scientists Control Over Cellular Protein Production   2026-07-17 00:26:14 +00:00 Controlling ribosomal RNA could help researchers target diseases driven by too little or too much protein production. Cells do not simply make proteins at a fixed pace. They continually adjust production to match their needs, and those changes can help determine whether a cell keeps dividing, adopts a specialized identity, or retains the developmental flexibility [...] Read more...   Natural Supplement May Boost Cancer-Fighting Immunity   2026-07-16 23:16:06 +00:00 A natural supplement strengthened lasting anticancer immune responses in obese mice. Weight loss can improve many aspects of health, but the immune system may not recover as quickly. Obesity can leave behind long-lasting changes in the bone marrow, where immune cells are formed, potentially weakening the body’s ability to respond to cancer even after excess [...] Read more...   Scientists Overcome a Major Electrical Bottleneck in Next-Generation Semiconductors   2026-07-16 19:54:12 +00:00 One of the largest obstacles limiting the next generation of computer chips may finally have a solution. The shrinking of computer chips has exposed a stubborn problem: even when a semiconductor can carry electricity efficiently, getting that electricity into the material can waste power and slow the device down. Researchers in South Korea have now [...] Read more...   Mysterious Radio Beacon Near a Black Hole Defies Expectations   2026-07-16 19:19:14 +00:00 A black hole in a relatively nearby galaxy has abruptly switched on a powerful cosmic beacon, and years later, it is still blazing. Astronomers have discovered a galaxy whose central black hole has remained extraordinarily bright in radio waves for more than eight years after its emission suddenly increased by more than 20 times. Located [...] Read more...   Could Dark Matter Be Hiding in a Hidden Fifth Dimension?   2026-07-16 18:44:15 +00:00 The geometry of a hidden dimension may naturally explain dark matter resonance and its elusive behavior. Every galaxy appears to carry far more mass than telescopes can see. That invisible material, known as dark matter, may be linked to a hidden fifth dimension whose geometry naturally shapes how dark matter particles behave, according to a [...] Read more...   A 24-Hour Fast Activates a Microbial Pathway That Helps Heal the Gut   2026-07-16 15:07:40 +00:00 A gut bacterium appears essential to the intestinal repair benefits linked to fasting before radiation. During radiation treatment for abdominal cancer, the therapy aimed at a tumor can also injure the delicate lining of the small intestine. That damage can lead to severe digestive problems and may restrict how much radiation a patient can safely [...] Read more...   Brighter Days May Lead to Deeper, Better Sleep   2026-07-16 14:32:45 +00:00 Consistent exposure to brighter daytime light was associated with earlier sleep timing and deeper early night sleep. A bright afternoon may influence what happens hours later when the lights go out. Research led by University of Manchester scientists suggests that stronger and more consistent daytime light exposure is linked to earlier sleep, earlier waking, and [...] Read more...   The Hidden Tradeoff Behind Today’s Most Powerful Weight-Loss Drugs   2026-07-16 13:57:04 +00:00 Researchers say treatment decisions should be individualized by weighing expected benefits, potential harms, treatment burden, cost, availability, and patient preferences. A person taking an obesity drug may see a substantial drop on the scale after a year, yet experience little meaningful improvement in daily quality of life. The same treatment may also bring stomach and [...] Read more...   Morning Glories May Be Losing the Race Against Climate Change   2026-07-16 11:39:44 +00:00 A study suggests that severe pollinator losses may have sharply slowed plant adaptation. A morning glory facing a warmer climate may benefit from blooming earlier. But if pollinators are becoming harder to attract, producing larger flowers may matter more. New research suggests that these competing pressures have become linked in a way that sharply limits [...] Read more...   Scientists Solve the Mystery of Why Antarctica Froze Before the Arctic   2026-07-16 11:04:54 +00:00 Antarctica’s first ice sheet may have begun with a geological head start hidden deep beneath the continent. Millions of years before thick ice spread across the Northern Hemisphere, forces inside Earth lifted East Antarctica into a vast region of mountains and plateaus. The higher terrain became cold enough to preserve snow even when the planet [...] Read more...   Atlantic Ocean Slowdown Could Supercharge California Storms   2026-07-16 10:29:50 +00:00 A new study shows how changes in ocean circulation could reshape global rainfall patterns. A storm reaching California can begin with changes thousands of miles away in the Atlantic Ocean. Climate modeling suggests that as one of the planet’s major ocean circulation systems weakens, more moisture could be directed toward the West Coast while snowfall [...] Read more...   Natural Compound Found in Cheese and Mushrooms May Help Boost Vaccine Responses   2026-07-16 01:49:59 +00:00 Researchers have found that the natural compound spermidine can help improve vaccine responses in older adults by reducing molecular markers of immune system aging. A vaccine shot can look the same from one arm to the next, but the immune system beneath the skin may not respond with the same force. In older adults, that [...] Read more...   A Deadly Ebola-Like Virus Is Spreading. Are We Ready?   2026-07-16 01:14:52 +00:00 BU virologist Nancy Sullivan says the Bundibugyo outbreak in the Democratic Republic of the Congo underscores the need for broader outbreak preparedness. The death of a nurse marked the moment health officials recognized that something dangerous was spreading. The illness was Bundibugyo virus, a rare but potentially deadly infection now driving a growing outbreak in [...] Read more...   Two Drinks a Day May Be Riskier Than Many Americans Think   2026-07-16 00:39:56 +00:00 Alcohol risk appears to increase beyond one drink per day, even at levels often described as moderate. Alcohol is often treated as a routine part of social life, but a new analysis suggests that even levels many Americans consider moderate carry measurable health risks. The study links drinking with a higher chance of death, disability, [...] Read more...

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