Home Births in the U.S. Increased Again, Maintaining Pandemic Trend
Home births jumped 12% from 2020 to 2021, continuing an upward trend observed since the start of the COVID-19 pandemic and reaching their highest level since at least 1990, according to the CDC. Home births increased from an absolute 1.26% of total births in 2020 to 1.41% in 2021, representing an increase of 6,000 births, […]
Engineers discover method to create upward water fountain in deep water: Fountain created by lasers, Marangoni Effect is the cause
A pair of University of Houston engineers has discovered that they can create upward fountains in water by shining laser beams on the water’s surface. Jiming Bao, professor of electrical and computer engineering at UH, and his postdoctoral student Feng Lin, attribute the finding to a phenomenon known as the Marangoni effect, which causes convection […]