Where do tears come from and why do we cry?

Where do tears come from and why do we cry?

This question comes in from the very lovely, and very curious, Kayla, aged six, who can sometimes be found over at My little babóg blog. Kayla would like to know…

Where do tears come from?

Where do tears come from?

Tears are made by little

read more

What would happen if the Earth’s gravity suddenly disappeared?

What would happen if the Earth’s gravity suddenly disappeared?

What would happen if the Earth’s gravity suddenly disappeared?

This was a recent question from my 10-year-old son… it certainly got some interesting discussions going around the kitchen table. When I opened up the question

read more