What fossils reveal about hybridization of early humans

Many people living today have a small component of Neanderthal DNA in their genes, suggesting an important role for admixture with archaic human lineages in the evolution of our species. Paleogenetic evidence indicates that ...

Hunt on for monarch butterfly eggs in the gardens of Canada

When Canadian conservation enthusiasts head out to find monarch eggs, it's always with a magnifying glass and a notebook. They are volunteers taking part in a summer census of the iconic, endangered butterflies.

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