Drag your mouse over the pop-up arrow and you will see four pieces of land. To see more hold the down arrow. Click on those pieces of land and then click on a piece of land shown out of the pop-up. Get the highest albedo effect as you can. (You can upgrade by clicking land again)
Albedo effect is something that needs to be increased worldwide. Research on it to learn why it needs to be increased and it's importance.
