A fleet of DIY solar-powered, high-altitude research balloons have recorded a mysterious low-frequency sound high in the upper atmosphere that repeats a number of times each hour. The sound occurs in the infrasound range, meaning it’s below the threshold of human hearing, only occasionally spiking as high as 25read more

Following an uncommonly-prolonged three-year La Niña, ocean surface temperatures have risen precipitously over the past two months, reaching record-breaking highs—and a warm El Niño period is forecast to begin sometime within the next few months. Satellite and Argo buoy data gathered by the National Oceanic and Atmospheric Administration (NOAA) has revealed thatread more

There are certain segments of DNA that have remained relatively unchanged in the tens of millions of years since mammals split from their reptilian forebears— tried and true segments of code that remained unchanged throughout the course of mammalian evolution. However, roughly one million years ago a sudden change inread more