A key geological clue to a global disruption in Earth’s ancient carbon cycle may have a more local origin. Between roughly 2.5 and 2 billion years ago, Earth underwent the greatest chemical transformation known from its surface history as oxygen accumulated in the atmosphere. That shift ultimately helped create conditions for complex organisms such as […]
Scientists Identify a Surprising 129-Day Limit for Predicting the Weather
A new study suggests the atmosphere may retain enough information for weather to remain theoretically predictable for roughly 129 days under ideal conditions. How far into the future could weather ever be predicted, even if forecasters knew the atmosphere perfectly? Meteorologists have wrestled with that question since numerical weather prediction emerged in the late 1950s. […]
The Ancient Mediterranean Diet Wasn’t What You Think
The ancient Mediterranean diet was not one fixed menu but a collection of regional diets dominated by bread and shaped by wealth and availability. For Roman emperor Julian (332–363 CE), bread occupied a central place at the table. He described it as the food that “among us is thought to be the most nourishing.” That […]
The Ancient Mediterranean Diet Wasn’t What You Think
The ancient Mediterranean diet was not one fixed menu but a collection of regional diets dominated by bread and shaped by wealth and availability. For Roman emperor Julian (332–363 CE), bread occupied a central place at the table. He described it as the food that “among us is thought to be the most nourishing.” That […]
The Ancient Mediterranean Diet Wasn’t What You Think
The ancient Mediterranean diet was not one fixed menu but a collection of regional diets dominated by bread and shaped by wealth and availability. For Roman emperor Julian (332–363 CE), bread occupied a central place at the table. He described it as the food that “among us is thought to be the most nourishing.” That […]
11,000-Year-Old Grains Reveal a Surprise About the Origins of Agriculture
A new integrated isotope study suggests that early increases in cereal grain size were driven by growing conditions rather than human selection. About 11,000 years ago, communities across southwest Asia began cultivating wild cereals, legumes, and fruit-bearing plants as they increasingly produced their own food. Over thousands of years, these practices reshaped hunter-gatherer lifeways and […]
Lost Vatican Letter Recasts 1066 as a Holy War Against “Followers of Satan”
A lost papal letter suggests King Harold’s support for a rival pope may have helped turn the Norman Conquest into part of a wider European power struggle. For generations, the story of 1066 has seemed straightforward: a disputed crown, an invading duke, and a decisive battle that ended Anglo-Saxon rule in England. But new research […]
This Common Gut-Bacteria Compound May Be Linked to Alzheimer’s Disease
Gut bacteria produce a common compound called imidazole propionate, and a study found that higher levels are associated with dementia related changes in the brain. A molecule made by gut bacteria could help explain why changes in the intestinal microbiome are connected to Alzheimer’s disease. Researchers report that higher levels of imidazole propionate, or ImP, […]
This Common Gut-Bacteria Compound May Be Linked to Alzheimer’s Disease
Gut bacteria produce a common compound called imidazole propionate, and a study found that higher levels are associated with dementia related changes in the brain. A molecule made by gut bacteria could help explain why changes in the intestinal microbiome are connected to Alzheimer’s disease. Researchers report that higher levels of imidazole propionate, or ImP, […]
This Common Gut-Bacteria Compound May Be Linked to Alzheimer’s Disease
Gut bacteria produce a common compound called imidazole propionate, and a study found that higher levels are associated with dementia related changes in the brain. A molecule made by gut bacteria could help explain why changes in the intestinal microbiome are connected to Alzheimer’s disease. Researchers report that higher levels of imidazole propionate, or ImP, […]