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The implications for our possible early human ancestors, such as the species Australopithecus afarensis, are significant.

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"These results suggest that habitual climbing by Twa and Agta men changes the muscle architecture associated with ankle dorsiflexion," wrote the authors of the study.It demonstrated that a foot and ankle bone structure adapted primarily for walking upright on land does not necessarily exclude climbing as a behaviorally habitual means of mobility for survival.The Oldowan is considered to have been made and used during the Lower Paleolithic, from 2.6 to 1.7 million years ago, whereas the Acheulean emerged about 1.76 million years ago and was used by early humans up to about 300,000 years ago or later.To find answers, the team will be reappraising the chronological stratigraphy of Bed II, known to have yielded previous significant finds, and will be re-excavating some of the later beds of the best known fossil and stone tool sites.More specifically, the team's objectives are including the following activities: - Conducting test pits (very limited, targeted excavations) at selective Bed II sites that have been determined to contain possible evidence related to the emergence of Acheulean tools at Olduvai; - Applying the new landscape sampling approach across Middle and Upper Bed II deposits and conducting random test pits in the various paleo-ecological settings; - Applying advanced dating methodologies to Bed II volcanic ashes to produce higher-resolution, more accurate dates for Bed II locations; - Measuring stratigraphic sections at and between key archaeological sites to determine their relative order and paleoecological contexts; - Determining the correlation of volcanic ash layers between sites to test previous proposed correlations and then establishing the basin-wide stratigraphic framework for Bed II; and finally, - Reconstructing the paleo-environments at Olduvai during the 1.7-1.3 Ma time period.

New research suggests that between three million and 3.5 million years ago, the diet of our very early ancestors in central Africa is likely to have consisted mainly of tropical grasses and sedges.Grab your pickax and miner’s helmet and prepare to start digging through this paper, from the upper atmosphere down the core of the planet–and out the other side into the realm of 3D time.Discover the true nature of planetary interiors and the worlds that are hidden inside and beyond–all as a “natural consequence” of the structure of the universe.They found that the Twa and the Agta hunter-gatherers regularly climbed trees to gather honey, an important element in their diets.More specifically, they observed that the climbers "walked" up small trees by applying the soles of their feet directly to the trunk and progressing upward, with arms and legs advancing alternately.Homo erectus is widely thought to be the first species to venture out of Africa to populate the Middle East/Eurasia.