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America's Giant Gun to Space: The HARP Experiment

In the 1960s, America explored space with rockets—but Project HARP tried a different approach: using a massive gun. This High Altitude Research Project aimed to reach orbit more cheaply. Designed by ...

How Probiotics Can Help Climbers Adjust to High Altitudes, According to Science

The bacteria living in your gastrointestinal tract may play a surprising role in how much altitude sickness affects you.