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Paleontology

Rare English bits are oldest known charcoal

Analyses of small black chunks of material extracted from 420-million-year-old rocks found along the England-Wales border suggest that they're remnants of the earliest known wildfire.

Archaeology

Guatemalan sites yield Maya insights

Excavations at three archaeological sites in Guatemala have provided new insights into both the early and late stages of ancient Maya civilization.

Astronomy

Before the big one hits

The next time you hear about an asteroid or comet about to hit Earth, you can go to a new Internet site to find out where the collision will be and how much damage will occur.