You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "who walked across the bering strait to the americas?" whose answer is Paleo-Indians.
Each document should contain about 30 words, and these documents should contain useful information.

Query: evidence of humans walking across the bering strait
Useful Output:

Doc 1: The pre-Clovis humans could have crossed the Bering Land Bridge on foot, then used simple boats to skirt around the glaciers and make their
Doc 2: DNA sequences acquired from a handful of ancient human remains found at archaeological sites in the Americas suggest that the peopling of the
Doc 3: Artifacts found in Idaho support theory that humans reached the Americas before a land route to Asia existed.
Doc 4: It was during or after the mid-Wisconsin interglacial that humans from Siberia made their way across Beringia into North America. This migration was not a
Doc 5: Two new studies have now, finally, put an end to the long-held theory that the Americas were populated by ancient peoples who walked across the Bering Strait