Did humans walk on all fours?

Did humans walk on all fours? Early humans learnt to walk on two feet rather than all fours due to ‘bombardment of exploding stars’ An ancient barrage of exploding stars close to Earth is the main reason early humans learnt to walk on two feet rather than all fours, according to new research.

Early humans learnt to walk on two feet rather than all fours due to ‘bombardment of exploding stars’ An ancient barrage of exploding stars close to Earth is the main reason early humans learnt to walk on two feet rather than all fours, according to new research.