Beneath a quiet ridge in South Africa lies a 2.7-billion-year-old geological giant that transformed a nation and quietly supplied nearly half the gold ever mined.
À l’Archéen, la Terre était un monde sans oxygène, où la vie est pourtant déjà présente sous la forme de bactéries microscopiques. Celles-ci allaient d’ailleurs transformer notre Planète en produis...
À l’Archéen, la Terre était un monde sans oxygène, où la vie est pourtant déjà présente sous la forme de bactéries microscopiques. Celles-ci allaient d’ailleurs transformer notre Planète en produisant progressivement l’oxygène dont dépend toute vie aujourd’hui. Mais comment ont-elles survécu...
Topics:
oxygène
vie
bactéries
transformation
évolution
Astronomers have detected a ghostly galaxy that is almost completely made of dark matter. The faint object was revealed by just four globular star clusters hiding in the Perseus cluster. While most...
Astronomers have detected a ghostly galaxy that is almost completely made of dark matter. The faint object was revealed by just four globular star clusters hiding in the Perseus cluster. While most galaxies blaze with billions of stars, a rare few are so faint they are barely detectable. These low-surface-brightness galaxies contain very few stars [...]
Topics:
galaxy
dark matter
perseus cluster
low-surface-brightness galaxy
Autonomous drones that can follow people or objects on their own are becoming more common in policing, border security, and surveillance. These aircraft use camera-based artificial intelligence sys...
Autonomous drones that can follow people or objects on their own are becoming more common in policing, border security, and surveillance. These aircraft use camera-based artificial intelligence systems to lock onto a target and track it without human control. While the technology offers many benefits, new research shows it also has a serious weakness that […]
The post How an ordinary umbrella can trick and capture autonomous drones appeared first on Knowridge Science Report.
Topics:
autonomous drones
ai systems
camera-based tracking
security vulnerabilities
artificial intelligence
High blood pressure is often called a silent killer because many people do not feel sick even when their numbers are dangerously high. Doctors usually explain it as a problem of the heart and blood...
High blood pressure is often called a silent killer because many people do not feel sick even when their numbers are dangerously high. Doctors usually explain it as a problem of the heart and blood vessels, but new research suggests the brain and nervous system may play a much bigger role than we once thought. […]
The post Hidden brain signals may cause high blood pressure, study finds appeared first on Knowridge Science Report.