Previous version

• use data from an API
• circle size related to magnitude value
• interaction: click circle and direct to a url
• added color to the circles, according to depth (shallow, intermediate, deep)
• added interaction: dragging to make the earth turn left and right.

Updated version

• added dropdown menus. User can select to view earthquakes by choosing depth and magnitude.
• fixed coding error on the colorscale
• added tooltip