Once you've decided the time and place you'd like to visit, say take me to {month} {yyyy} and select a location from the DESTINATION field by using the arrows. Then, sit back, relax, and watch the picture in the center of your screen take you back in time to see images from Whyville's past. Don't forget to click on the RECORD DATA button to collect temperature and CO₂ data from your journey. You'll receive two clams for every data point that you submit.
Note: you are limited to one submission per location, month and year.