A fresh analysis of Ötzi the Iceman’s stomach suggests a grisly new climax to the world’s most famous prehistory murder mystery: death by ambush, a surprise killing in the afterglow of a big meal.

Ötzi was found in 1991, frozen and fantastically preserved in ice high in the Italian Alps, where he’d perished 5,300 years ago. With his tattoos and cool tools and smart outfit, rendered by artists with soulful brown eyes under a weathered brow, he became a Copper Age celebrity. Public and scientific imagination seized on the circumstances of his life — and, of course, his death.

Heike...

The next time you hunger to see wildlife without leaving the city limits, save yourself a trip to the zoo, and take a peek inside the refrigerator. Places inside your home, like the fridge, water heater and bedroom pillows, contain more wild and unknown species than any nature reserve.

A project to collect and identify the little-studied flora and fauna of our homes, with our help, was launched Aug. 21 by ecologists at North Carolina State University (the same biology department organizing the School of Ants project). The Wild Life of Your Home project will collect samples from rural and urban...