Diverse lines of evidence point to humans’ presence in the New World long before the dawn of Clovis culture. But rewriting this chapter of human history raises many questions about how these early people came to inhabit these continents.
Some studies suggest that associations between the health of children and the experiences of their parents or grandparents may be due to epigenetic mechanisms, but confounding factors challenge this interpretation.
From diagnosis to tracking treatment responses, bacteria and other microbes in the blood, gut, and tumors of cancer patients may provide helpful hints for improving their care.
Scientists have documented examples of corals “remembering” prior exposure to heat stress in the field, and are now simulating these phenomena in the lab to better understand their cellular and molecular underpinnings.
Seven years of surveillance and research revealed the complex history of the H1N1 virus that leapt from pigs to humans and sparked the global swine flu outbreak.