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illustration of asteroid heading for Earth

SPACE ROCK  An iron asteroid hurtles through space in this artist’s conception of an event that left a large crater in northwest Greenland sometime in the distant past.

Chase Kulakowski

STILL RECOVERING  Chase Kulakowski, now aged 3, developed acute flaccid myelitis in October 2016. What started as a runny nose quickly progressed to a having lifeless right arm, the Chicago Tribune reported. But surgery and physical therapy has given Chase use of his arm again.

mammoth, mastodon, and gomphothere

MAMMOTH WORLD  A Columbian mammoth (Mammuthus columbi), an American mastodon (Mammut americanum) and a gomphothere (Cuvieronius) were among the prehistoric elephant relatives that roamed North America and Eurasia until the end of the last ice age.

Western European Neandertal skull

ANCIENT KNOCKS A Western European Neandertal skull from around 40,000 years ago includes a healed bone injury, indicated by two arrows.



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