stupid radiators

Yes, it's the time of the month when I complain about the cold again. (::sideeyes my hormones::) I am starting to suspect that whoever built our house was an idiot. The radiators are almost all located directly beneath windows, and the metal vents on the fronts are all angled up. Up? Heat doesn't need any help to go up! How about *down*, to encourage the air to actually go out into the room a little before rising straight up? If I want to stand in front of a window and lean my head against the glass I can be *toasty warm*, seriously, WHAT. (I really like having curtains/shades open during the day to get some light in here, but we definitely need to put heavy curtains over all these windows at night, because this is just ridiculous.)