Hacker News
- Parachute use to prevent death and major trauma: systematic review (2003) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC300808/ 24 comments
- Parachute use to prevent death and major trauma related to gravity challenge (2003) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC300808/ 9 comments
- Do Parachutes Really Help Against the Gravitational Challenge? http://www.ncbi.nlm.nih.gov/pmc/articles/pmc300808/ 9 comments science