With time travel and mysteries that need solving, the Galactic Academy of Science (G.A.S.) series instructs readers on how to think like scientists. Under the guidance of a Dude or Dudette from the future, the middle school characters are faced with treacherous, present-day crimes that require a historical knowledge of science in order to be solved. From investigating problems to analyzing data and constructing explanations and solutions, this series blends elements of sci-fi with educational methods that distill the key thinking habits of scientists and engineers.
 
The science of food safety combines with mystery in this G.A.S. adventure about an outbreak of foodborne illness
 
When a cruise featuring a cooking contest turns into a disaster of vomiting passengers, seventh-grade G.A.S. trainees Mae and Clinton have a mystery to solve. With help from Selectra Volt, Dudette from the future, the two kids travel through time to learn about the science of food safety. Between journeys to the past, they investigate clues aboard ship. But when a storm comes, and conditions aboard the disabled ship become desperate, can Mae and Clinton discover the cause of the outbreak in time?