- Walking on Two Legs May Have Evolved in Trees, Not on the Ground SciTechDaily
- Why did early hominins climb trees? cosmosmagazine.com
- How much time did our ancestors spend up trees? Savanna-living chimpanzees might help us find out Phys.org
- Did humans learn to walk in trees? ScienceDaily
- Some Early Hominins Evolved to Walk Upright While Still Living in Trees Discover Magazine