The weightlessness experienced by humans in space poses a number of challenges in the performance of day-to-day tasks. Early experts feared that weightless conditions would make food difficult to swallow, allowing it to collect dangerously in the throat. Scientists began developing bite-sized cubes, freeze-dried powders, and semiliquid space foods for astronaut use, but the space travelers found the foods unappetizing, difficult to rehydrate, and messy. How have these concerns been addressed?
Back in the day
After investigating charges of child abuse and the illegal stockpiling of weapons at the Texas ranch of the Branch Davidian religious sect, US ATF agents raided the compound. The confrontation turned violent, and 10 people were killed in the firefight. A siege of the compound ended 51 days later, when the complex was engulfed in flames. Seventy-nine people, including 21 children and Davidian leader David Koresh, died in the incident. How did the Davidians receive advance warning of the ATF raid?
Born on a day like today
Mario Andretti is the only racecar driver to have won the Indianapolis 500, stock racing's Daytona 500, and the international Formula One championship. He retired from Indy-car racing in 1994 with 52 victories, but continued his attempts to win the 24 Hours of Le Mans, a sports-car endurance race held annually in France. The Italian-American legend has been called the "Driver of the Century." How many members of the Andretti family have followed in Mario's footsteps and become racecar drivers?