Hot concrete and asphalt, glass and steel... sometimes nature can seem so far away on a hot day in a big city. But no matter how much we cover over wooded trails and grassy valleys, nature always manages to find a way to leave its mark.
Fossils reveal so much to us about the growth and change of the world over time. What does your sidewalk tell you?
Going on an urban fossil hunt can be a great way to find out...