Meet Grace. Hailing from Rutgers University, a meter-and-a-half tall and weighing in at just over 7 stones, Grace is ranked No. 1 on the east coast in carbon dioxide purchases this year. A powerhouse package of awesome, she also happens to be doing one of my favorite experiments on the ship. Grace brought most of that enormous CO2 supply with her (check out the oversize golden scuba tanks in the photo below) to investigate the effects of increased CO2 in the atmosphere. For more than two weeks, she had incubators full of seawater connected to the CO2 tanks, all bubbling away at three levels: the CO2 in the atmosphere of pre-glacial Earth, today’s CO2 level, and the CO2 level we’re predicted to reach by 2100. The more CO2 is in the atmosphere, the more CO2 gets dissolved in the ocean (or these little mini incubated oceans, in Grace’s case), and from there she can see how the community of phytoplankton, bacteria, and viruses reacts. These tiny lil guys are at the base of the food chain, and since their tiny lil lives are very sensitive to acidity in the water, increased CO2 (increased acidity) has some big effects further up the food chain. It’s a tedious but elegant experiment and we’ve seen some really cool results so far, but overall I’m just impressed that Grace made the DEA watch list for all that CO2. Congrats, Grace.