Does altitude change the percentage of oxygen molecules in the air? NEVER!

• March 21, 2020
• 0

We all live underneath a huge ocean of air that is several miles deep. The pressure on our bodies is about the same as ten meters of sea water pressing...

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Two Days at Home! – Samer Hajjar

• March 20, 2020
• 0

"Goulotte Pellissier Pointe Lachenal" 1st Day: 12/03/2020 The route grading: 220 m, TD- 5c > 5a II 4 M5 + TD stands for global grading "très difficile", 5a minimum obligatory...

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