Why is the sky dark at night? You might think the answer is obvious - the sun isn't up! But the only reason the sky looks blue during the day is that sunlight scatters off of the atmosphere -...
Do you have one of these? Hai uno di questi? I got a little obsessed with mine. Il mio mi ha un po' ossessionata In fact I got a little obsessed with all my stuff. In verità, tutti i miei...