The Myth of the 21-Day Habit

How did this become a fact, & how long does it really take to create change?

Photo by Marten Bjork on Unsplash

What is the only man-made object visible from space? I’m sure you will say the Great Wall of China. But that’s not exactly true. The question should be: at what point from space is it visible? Astronauts who have been on the moon say it’s not visible. Those onboard the International Space Station also say it’s not visible, as it’s the…