Think of it as a celestial parlor game: What is the minimum number of satellites needed to see every point on Earth? And how might those satellites stay in orbit and maintain continuous 24/7 coverage while contending with Earth’s gravity field, its lumpy mass, the pull of the sun and moon, and pressure from solar radiation?
articles
Response to Fire Impacts Water Levels 40 Years Into Future
Salvage logging and re-seeding a forest after a wildfire helps reduce flooding and returns water levels to normal faster, according to a new paper from a Washington State University researcher.
Double-Checking the Science
Sometimes it helps to check the facts. You may be surprised what you find.
Heart Disease Linked to a Higher Risk of Kidney Failure
New research indicates that cardiovascular diseases--including heart failure, atrial fibrillation, coronary heart disease, and stroke--are each linked with a higher risk of developing kidney failure.
One-Fourth of Children with Autism Are Undiagnosed
One-fourth of children under age 8 with autism spectrum disorder — most of them black or Hispanic — are not being diagnosed, which is critical for improving quality of life.
Machine Learning Shapes Microwaves for a Computer’s Eyes
Engineers from Duke University and the Institut de Physique de Nice in France have developed a new method to identify objects using microwaves that improves accuracy while reducing the associated computing time and power requirements.
