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Published news and blog articles, organized by category. Browse older coverage by month or search for a topic. Undated blog guides appear after dated news.
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The Exploration of Venus
The Exploration of Venus | N43 N43 ANALYSIS WORLD · 121 N43 ANALYSIS · PLANETARY SCIENCE The Exploration of Venus From early telescopic observations to Soviet landers and modern radar mapping, humanity's efforts to probe the hottest planet…
The Science of Solar Eclipses
The Science of Solar Eclipses | N43 N43 ANALYSIS WORLD · 119 N43 ANALYSIS · ASTRONOMY The Science of Solar Eclipses A cosmic coincidence of geometry makes the Moon appear exactly the same size as the Sun from Earth. When their paths cross,…
The Science of El Nino
The Science of El Nino | N43 N43 ANALYSIS WORLD · 095 N43 ANALYSIS · CLIMATE SCIENCE The Science of El Nino A warming patch of the tropical Pacific Ocean that reshapes weather on every continent — droughts in Australia, floods in Peru,…
The Science of Lightning
The Science of Lightning | N43 N43 ANALYSIS WORLD · 089 N43 ANALYSIS · PHYSICS The Science of Lightning The electrostatic physics of lightning — from charge separation in thunderclouds to the 30,000 °C plasma channel that splits the sky,…
The Engineering of Rocket Propulsion
The Engineering of Rocket Propulsion | N43 N43 ANALYSIS AI · 071 N43 ANALYSIS · SPACEFLIGHT The Engineering of Rocket Propulsion A rocket carries its own oxidizer, turns chemical energy into a supersonic plume, and pays for every kilogram…
The Technology Behind RFID Passports
The Technology Behind RFID Passports | N43 N43 ANALYSIS AI · 065 N43 ANALYSIS · TECHNOLOGY The Technology Behind RFID Passports A passport is no longer just paper and ink. The modern e-passport carries a microprocessor chip, a radio…
The Science of Supercapacitors
How Hydrogen Fuel Cells Work
How Hydrogen Fuel Cells Work | N43 N43 ANALYSIS AI · 062 N43 ANALYSIS · ELECTROCHEMISTRY How Hydrogen Fuel Cells Work A fuel cell combines hydrogen and oxygen across a proton exchange membrane to produce electricity, heat,…
The Engineering of Tidal Power
The Engineering of Tidal Power | N43 N43 ANALYSIS AI · 061 N43 ANALYSIS · ENERGY ENGINEERING The Engineering of Tidal Power How the gravitational forces of the Moon and Sun become grid-ready electricity through barrages,…
The Engineering of Bionic Eyes
The Engineering of Bionic Eyes | N43 N43 ANALYSIS AI · 053 N43 ANALYSIS · NEUROENGINEERING The Engineering of Bionic Eyes Restoring vision to the blind is one of the hardest problems in neuroengineering. Retinal prostheses, cortical…
The Technology of Robotic Surgery
Robotic surgery is not a robot taking over the operating room. It is a control system that translates a surgeon's hands into precise, filtered motion at the tip of tiny instruments.
The Physics of MRI vs fMRI
How nuclear magnetic resonance became the most powerful imaging tool in medicine — and how fMRI turned it into a window into thought itself.
The Technology of Ventilators
The Technology of Ventilators | N43 N43 ANALYSIS AI · 039 N43 ANALYSIS · MEDICAL TECHNOLOGY The Technology of Ventilators How mechanical ventilators breathe for patients who cannot: the physics of positive pressure, the evolution from iron…
The Engineering of Prosthetic Limbs
The Engineering of Prosthetic Limbs | N43 N43 ANALYSIS AI · 037 N43 ANALYSIS · BIOMEDICAL ENGINEERING The Engineering of Prosthetic Limbs From wooden peg legs to mind-controlled bionic arms, prosthetic limb engineering has become one of…
The Physics of Ultrasound Imaging
The Physics of Ultrasound Imaging | N43 N43 ANALYSIS AI · 035 N43 ANALYSIS · MEDICAL IMAGING The Physics of Ultrasound Imaging Ultrasound turns piezoelectric vibrations, acoustic impedance mismatches, and pulse-echo timing into real-time…
How Hearing Aids Process Sound
How Hearing Aids Process Sound | N43 N43 ANALYSIS AI · 030 N43 ANALYSIS · AUDIO ENGINEERING How Hearing Aids Process Sound From ear trumpets to multi-core DSP chips, the signal processing pipeline that transforms environmental sound into…
The Technology of Contact Lenses
The Technology of Contact Lenses | N43 N43 ANALYSIS AI · 029 N43 ANALYSIS · BIOMEDICAL TECHNOLOGY The Technology of Contact Lenses Five centuries of iteration from da Vinci's water-filled bowl to silicone hydrogel — how a thin polymer disc…
How Earthquake-Resistant Buildings Are Designed
How Earthquake-Resistant Buildings Are Designed | N43 N43 ANALYSIS AI · 028 N43 ANALYSIS · CIVIL ENGINEERING How Earthquake-Resistant Buildings Are Designed From base isolation to tuned mass dampers, the engineering principles that keep…
The Turing Test and Machine Intelligence
The Turing Test and Machine Intelligence | N43 N43 ANALYSIS AI · 002 N43 ANALYSIS · ARTIFICIAL INTELLIGENCE The Turing Test and Machine Intelligence Alan Turing's 1950 question — can machines think? — launched a debate that shaped…
How the Viking Longships Sailed
How the Viking Longships Sailed | N43 N43 ANALYSIS WORLD · 146 N43 ANALYSIS · WORLD How the Viking Longships Sailed The slender, clinker-built warship that carried Norse raiders, traders, and settlers across the Atlantic, the North Sea,…
The Great Zimbabwe Ruins
The Great Zimbabwe Ruins | N43 N43 ANALYSIS WORLD · 143 N43 ANALYSIS · WORLD The Great Zimbabwe Ruins Sprawling across 7.2 square kilometers of southeastern African hills, Great Zimbabwe is the largest stone structure in precolonial…
The Nazca Lines of Peru
The Nazca Lines of Peru | N43 N43 ANALYSIS WORLD · 139 N43 ANALYSIS · WORLD The Nazca Lines of Peru Etched into one of Earth's driest deserts, hundreds of giant figures — hummingbirds, monkeys, spiders, and geometric grids — have survived…
How Dialysis Machines Work
How Dialysis Machines Work | N43 N43 ANALYSIS AI · 038 N43 ANALYSIS · MEDICAL TECHNOLOGY How Dialysis Machines Work The engineering and physiology behind hemodialysis: how a machine replaces kidney function by filtering blood across a…
The Petra Rock-Cut City
The Petra Rock-Cut City | N43 N43 ANALYSIS WORLD · 145 N43 ANALYSIS · WORLD The Petra Rock-Cut City How a nomadic desert people carved a thriving metropolis into rose-red sandstone cliffs, engineered desert water systems that sustained…
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