When humans see purple, we’re really seeing a blend of red and blue light. Hummingbirds see purple plus ultraviolet—and lots of other nonspectral colors. https://bit.ly/2BsFKUF
Security researchers say the group exploited a zero-day in Apple’s operating system to target European government officials over LinkedIn. https://bit.ly/3kmtpoZ
Whether you’re hiking, climbing, or backpacking, here’s how to build a layering system that can handle all that Mother Nature will throw at you. https://bit.ly/3d9dcj6
