Most people can remember little from before the age of 3, but do "photographic" memories start earlier? And are the earliest photographic memories retained fully formed, unlike fragmented normal memories? Help Laex find an answer. 

Flies are not known for having long memories, which could be why they seem never to tire of flying into windows. Ben12!? would like to know why they don't appear to do themselves any damage when they do this at high speed.

Most memories fade or get corrupted over time, but our sense of time passing is highly variable and little understood. jamie534 is interested in whether the way we measure time affects the way we perceive its passing.

Our brazen attempt to make memory and time the theme of the week runs into the sand with the next question – though there is a never-ending quality to housework: Alexa’s father insists it's harder to wash up in cold water, but she reckons the temperature of the water makes no difference. So which of them is right?.

Finally, remember when you used to write things on paper? Have you ever wondered whether the direction of a writing script indicates the "handedness" of those who invented it? Help grannybuttons answer this intriguing question.