Work begins on Calif. bullet train, locals angry (Update)

Trucks loaded with tomatoes, milk and almonds clog the two main highways that bisect California's farm heartland, carrying goods to millions along the Pacific Coast and beyond. This dusty stretch of land is the starting point ...

EXPLAINER: Was tornado outbreak related to climate change?

The calendar said December but the warm moist air screamed of springtime. Add an eastbound storm front guided by a La Nina weather pattern into that mismatch and it spawned tornadoes that killed dozens over five U.S. states.

On the cusp of valleytronics

Research into harnessing two-dimensional (2-D) materials for everyday devices has had some ups and downs. However, the emerging field of valleytronics is using energy troughs to offer renewed potential.

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