explain – oulalafestival

What is the difference between processed foods and ultra-processed foods? RD explain

You’ve heard of processed foods before, but what about ultra-processed foods? This descriptor is gaining more attention as research into this food category unfolds. What are ultrafoods, anyway, and what …

Image of many galaxies, with some distorted streaks near the center.

Science

No WIMPs! Heavy particles do not explain the quirks of Ars Technica gravitational lenses

Zoom in / The red arcs to the right of center are background galaxies distorted by gravitational lensing. The number, location and degree of distortion of these images depends on …